Thursday, June21, 2018

' Icom Marine Ssb Book'

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CHAPTER from Gordon West
Welcome to the world of long distance with marine
single sideband SSB radio Hundreds of voice and data email chan
nels in the MF and HF frequency spectrum have been allocated to mari
ners for longrange shiptoship and shiptoshore single sideband voice party line can never
be replaced by ship satellite private The
advantage of marine SSB is the ability to have a multiparty for the exchange of information Satellite is like
a telephone call you can only talk to a specific person at a You cannot talk to a group of individuals An SSB gives mariners
the ability to share information with one another about weather ports
of call cruising conditions etc Marine SSB is more like an internet
chat group than a phone call
The marine single sideband service and frequencies have been around
for years However only recently have we seen the introduction of
lowcost nocrystal marine SSB equipment that can offer marine
radio ham radio and marine email capabilities in one neat 12volt
DC package ICOM a leader in marine commercial and amateur
radio equipment presents the overview of the marine single an review of equipment and of the radio and antenna and ground systems
If you are like most mariners you are probably not all that interested in
what makes SSB radio work on the inside However one thing is for
sure when you pick up the mic or prepare to send a computer you want the very best signal on the band and you want to
connect with the station you are calling on the first try
In this book well show you how in a language We will also give you some proven installation tech
niques that will help you to install the equipment on your boat if you
are handy with tools But keep in mind that your marine page 1
dealer is an expert in this field They have the experience to complete a
proper installation of your equipment If you dont feel you have the
necessary skills your dealer is the best person you can find to insure
proper installation and top performance from your marine SSB radio
This handbook is also a ready reference for the hundreds of voice and
data email channels available in the maritime service as well as
channels and frequencies for shiptoship and shiptoshore in both the
marine service and the amateur radio service Well even show you
how to tune in weather facsimile and NAVTEX
All frequencies listed have been updated in early 1997
with no anticipated changes for the next few to communicate throughout the world on your marine Do you want to pick up that microphone and a quick
phone call home Want to send a FAX or email Ready to
receive weather information over your laptop computer If so then read
onICOM presents the very best in marine single sideband and we will
give you a fun and look at longrange 2
Start with a Good VHF Set
Before you begin thinking about marine SSB long distance lets first review the hard working marine VHF radio system
ICOMs lCM59 VHF set is shown with optional flush mount kit
Radio rules require that you must have a marine VHF radio in your
vessel before you can install a marine SSB international marine VHF service is designed for coastal cruising
We use marine VHF when we are within 20 miles of a shore station
or another VHF equipped vessel This is the effective range of the
VHF VHF system is worldwide Whether you cruise to
Hawaii Bermuda or the the VHFFM channels are the
same as they are here Just use the international INT button on your
radio The frequencies assigned to channels may be different in the
US Canada or the rest of the world
page 3
Your typical shiptoshore VHF range to the Coast Guard should be
about 20 miles You can normally hear weather broadcast WX2 and others up to 80 miles away The marine WX
channels are available only in the US and Canada The range to a
marine telephone operator should be at least 20 miles is better than 10 miles
If you are not achieving this minimum range check out your VHF
antenna system and all connections For sailboats the best type of
antenna is one that is mounted on the mast with good quality cable
down to your set Keep a portable antenna as a spare in case Sailboat masthead antennas will generally pull in stations
and transmit further than any other type of antenna system These
antenna are only 3 tall and have 3dB gain They use the height of
the mast head to achieve maximum range
For powerboats you should use a minimum of an 8foot If you have a large more stable vessel you might want to
select a 21foot 9dB gain antenna that performs well in all but heavy
seas A good powerboat antenna installation will normally let you reach
out to the distances described above
A good quality hightech VHF transceiver is also important to range ICOM produces both handheld and marine VHF transceivers These installed radios
with options
meet minimum digital selective calling DSC requirements DSC is a
new system for making distress calls This system will be over the next several years Deep Draft over 300 tons
vessels put into service since 1992 comply with this system now All
such vessels must comply by early 1999 Ultimately recreational ves
sels will need DSC VHF radios to communicate with DSC It is expected that all new marine VHF radios approved for sale
in the US will be DSC equipped by 20012002 An ICOM DSC VHF
set connected to your onboard GPS gives you added automatic in case of an emergency The DSC radio will transmit
an emergency call that includes your vessels position taken from the
GPS See the wide variety of ICOM VHF sets at your favorite 4
You must have a VHF set on board and a current FCC ship before a single sideband radio may be installed If you have a
licensed VHF system aboard and you need more than 20 miles of
range when out at sea then single sideband is your
next step
The Marine Single Sideband SSB Service
Dont let the words single sideband scare you Its simply a type of
radio transmission The military has been using single sideband for
years to transmit messages throughout the world Ham radio are permitted to select almost any type of worldwide have been using single sideband for
years on to talk to their buddies anywhere and 1971 the Federal Commission FCC phased in
SSB transmissions for the long distance marine radio service At the
same time it introduced the expanded marine VHF service for It also phased out the older double sideband sets
A single sideband signal concentrates your voice onto a radio wave capable of traveling from hundreds to thousands
of miles This very efficient compacted radio signal is a of your actual voice Unlike a commercial AM that sends out duplicate double voice wave
forms plus an
energy robbing carrier marine single sideband eliminates the
unneeded mirrorlike lower sideband the power robbing carrier that
does nothing more than hush background noise when nothing is on the
air Marine SSB puts all of the radio energy from your voice into a
compacted upper sideband wave form that gives you power
If you dont speak into the mic your transmitter doesnt put out any
energy Only when you speak will radio energy jump out into the air
page 5
waves In between each word your transmitter and battery system
relax This means that you can talk further with less current demands
from your battery system
Your compressed upper sideband signal is captured by a and that receiver converts your radio signal into crystal the FCC phased out double sideband
equipment and it doubled the number of available channels for More new SSB channels were also added in 1991
By compressing the transmitted signal into a very narrow band receivers are able to reject almost half the normal noise level from the air waves
FCCrequired keep SSB sets precisely on frequency to minimize that on receive By simply adjusting a single clarifier knob on
your SSB receiver you can produce the normal sounding voice that
was transmitted by a distant ship or shore Guard
Since safety at sea deserve the highest priority lets
first examine the United States Coast Guard and its role in the marine single sideband service Our Coast Guard and agencies throughout the world
guard 2182 kHz as the Distress frequency This allows you to contact shoreside and
marine rescue agencies immediately when outside of VHF
Channel 16 range Since 2182 kHz is an international you will find that there are literally thousands of this channel for a distress call 24 hours a
In 1999 2182 was replaced by 21875 as the International This new frequency asisignment is part of the new GMDSS
service required on vessels over 310 tons Use of 2182 will be phased
out and replaced by digital DSC watch on 6
The United States Coast Guard also offers additional on its Automated Vessel in each of the popular single sideband bands Imagine
using your marine SSB set to place a call for help when of miles away from any shore station Through the Coast
Guard AMVER system they can readily pinpoint the position of
commercial and military vessels passing through your area and signal
them to immediately alter course and steam to your location to Believe it or not you just thought you were all alone out on
the ocean There are actually many commercial and that could reach you within a matter of hours accounted for via SSB AMVER system radio The
AMVER system uses a full range of SSB frequencies to provide world
wide safety to oceangoing vessels See appendix for Home
Want to place a telephone call Shoreside commercial are standing by on hundreds of frequencies to place your phone
call These shorebased phone companies operate extensive and receiving antenna systems to bring in your signals loud and
clear Remember their revenue depends on your satisfaction You can
be assured that they have the most going for them when it comes to
powerful transmitters sensitive receivers and huge antenna arrays that
beam in on your single sideband signal These same also transmit traffic lists for ships at sea who have waiting from shoreside parties They also
broadcast storm warnings and other notices to mariners where safety at
sea is important If an emergency should arise the phone their massive antenna systems can also patch you into centers hospitals and emergencyat sea
medical charge See appendix for new marine SSB can also send and receive electronic mail over
public common carrier narrow band direct printing channels It is just
like sending email from your home or office through a your secret password over phone lines SSB email relies on the
USCG INFO 8003685647 page 7
airwaves and ionosphere in place of phone lines Your email provider
can be reached from anywhere in the world with up to 12 standing by for your computer traffic An email provide a significant savings over
conventional SSB voice or from your
vessel to your business or home or to anyone who has an email or
FAX capability on shore Shore stations can automatically reach by dialing a single phone number to get to your provider If you have a laptop
computer onboard your present
or new ICOM SSB may need only a small modem and software to
complete the email about SSB email in Chapter 3 with a complete listing direct printing frequencies listed in the appendix plus a
map showing a radio email electronic worldwide network of stations
also found in the It is a plugin affair to hook your marine SSB into email via the are many shiptoship frequencies allocated for long distances
to other vessels with marine SSB gear any land line charges you can communicate from one ship
to another ship in opposite parts of the world free of charge with
crystal clear reception Thanks to Mother Nature which well talk about
page 8
in a few moments your signals can travel thousands of miles to other
vessels with SSB equipment with almost no loss of voice quality See
appendix for For Free
Private shore stations share shiptoship channels This allows you directly with a marine supply company that can help you
replace the part that fell off your anchor windless 3000 miles away
There is no land line charge in this communication service because
you are transmitting directly to a distant marine parts or store These private coast stations can also marine business yacht club and marine salvage
air ambulance companies and any other type of that need to regularly communicate over hundreds or of miles to distant ship stations You may even be
able to set
up a marine SSB base station at your office to stay in touch matters when youre far out at sea Your sideband may also be
operated in the SITOR mode allowing for and
reception of documents such as yacht race standings and detailed manifests See appendix for voice and
SITOR marine SSB radio from ICOM can also be used to receive and in
certain cases transmit other services that share frequencies adjacent
to the marine band
You can tune into worldwide international broadcast stations and find
out the latest news here and abroad You can eavesdrop on military and
State Department that fill the high See appendix for Facsimile Charts Free
You can tie your weather facsimile receiver into your marine sideband
set and receive crystal clear weather charts in your particular area of
cruising See appendix for page 9
Ham Radio
You can also tune into amateur radio frequencies and listen for local
weather reports on the maritime mobile amateur radio amateur operators may use ICOM SSB transceivers that are
capable of transmitting on amateur frequencies The No Code Techni
cian license allows you worldwide ham privileges when
cruising within Mexico with a valid Mexican reciprocal And even if you dont obtain the ham license to talk all ICOM
marine SSB transceivers easily tune into ham calls so you can listen to
the valuable maritime mobile weather nets both upper and
lower your marine SSB set as an shortwave receiver You
can tune into foreign embassies the Air Force and the Navy stations and any other type of that can be
found on the worldwide high frequency Signals
Oh yes one last thingif you forgot to set your watch you can tune
into the international time signals wherever you cruise Tick tick tick
at the sound of the tone it is exactly See appendix for Reception for Free
If time ticks dont interest you consider the following that can be
received on your new marine single sideband allband US Air Force inflight Strategic Air Command
Air Force 1 the Presidents plane
Civil Air Patrol
United States Intelligence Agencies
Antarctic Stations
US Weather ships
Hurricane Research Center
Weather 10
Morse Code News and Weather for Free
Its also possible to tune in radio facsimile broadcasts and CW Morse
code broadcasts from national news agencies ie United and Associated Press These broadcasts take place frequencies that can be picked up just about
anywhere in
the world There are Morse code readers and teleprinter displays that
are easily hooked up to your ICOM transceiver and will instantly read
out what is being sent Its almost as good as your morning your ICOM marine SSB may be capable of transmitting on any
or all of these frequencies you should not Transmitting outside of
your authorized maritime and ham limits is illegal If you hold a valid
amateur radio license you will be permitted to transmit on ham bands
but transmitting outside of the marine and ham bands would be in an emergency to signal for help
So get that modem and laptop computer hooked up your ICOM ma
rine SSB by the plugin jacks on the back
Send and receive email
Tune into weather facsimile broadcasts and watch the weather
charts unfold on your computer screen Decode the dots and
dashes of Morse code computer programs
Tune into Navtex broadcasts from the Coast Guard and check
out the latest weather report or navigational warning
Your computer and your SSB make a perfect marriage to
add information and safety to your page 11
High Frequency Bouncing Radio Waves
Marine single sideband transceivers broadcast in the range of the radio spectrum Unlike VHF very high fre
quency that always travel the high frequency region take advantage of Mother Nature for
some extra long distance of July 1 1991 the following frequency bands have been allocated
for marine single sideband service
2 MHz 6 MHz 12 MHz 18 MHz 25 MHz
4 MHz 8 MHz 16 MHz 22 MHz 27 MHz
When transmitting on any band one component of your radio signal
hugs the surface of the ocean This is called the ground wave Ground
waves that hug the surface of the earth and ocean travel to 200 miles from your transmitter If you are communicating on
single sideband with a nearby shore station or another boat less than
100 miles away chances are its the ground wave component of your
signal thats doing all the work Your ground wave signal is always
there day or night and does not depend on anything other than a good
strong transmitted 12
Good ground wave coverage out to 150 miles depends on a good
antenna and a good radio frequency ground system aboard your boat
The better your antenna and grounding the further you can communi
cate via ground waves More on this later
Its the sky wave component of your transmitted radio signal that
gives you long distance single side band range Sky waves are of your transmitted radio signal that travel up into the air
and bounce off of the ionosphere and are reflected back to and even thousands of miles away
The ionosphere surrounds our globe and is present 24 hours a day Its
density and reflecting capabilities change with day and night the
season of the year and the 11year solar cycle Hanging like an
invisible radio mirror between two stations the ionosphere for reflecting back to earth marine SSB waves that strike it
at the right angle
The right angle to establish with a station lets say
3000 miles away depends on the time of day you are broadcasting and
the particular band of frequencies you are using Lower to bounce back to earth close in Frequencies around 12 MHz tend
to bounce back to earth over fairly long distances typically 3000 miles
22 MHz may give us the longest bounce enabling you to the West Coast of the United States into the If is very strong you may get a second bounce
off your sky
wave signal which enables you to talk twice the distance that you
normally would On 22 MHz this means that you can easily talk all the
way around the world on a doublehop or triplehop ionosphere is constantly changing and a frequency that on yesterday might not be suitable for
Often the time of day and season of the year will make a
difference When band conditions change in the ionosphere you
simply change frequencies on your ICOM to maintain a good clear
signal With multiple frequencies and multiple bands can stay in touch as the ionosphere goes through its regular
ups and downs
page 13
At night the ionosphere gradually lowers Your signals wont be able
to bounce as far however you will still enjoy several thousand miles daylight hours the ionosphere rises giving you longer range
on higher frequencies Since its the suns rays that charge up layers solar and other disturbances will and sometimes sideband waves are unaffected
by local weather conditions Whether its
sunny or cloudy snow or rain windy or still your sky wave range will
not be influenced by local weather Did You Know
The only time you will hear weather noise on your
transceiver is in the proximity of lightning and thunder
storms Lightning may be picked up as far away as 200
miles on lower frequencies It sounds like a static crash at
the exact same time that you see the bolt illuminate Some
mariners leave their SSB radio turned on while cruising at
night in inclement weather to get prepared for storm cells
When they hear it on the radio they should be prepared to
see it 14
After a few weeks of playing around with your new single telephone you will begin to get a feel for the expected range on
any one particular band of frequencies In our next chapter well give
you some secrets
Single Sideband Range
Your transmitted ground waves are seldom influenced by ionospheric conditions Here is what to expect in ground wave range
24 hours a day
SSB Ground Wave Range
2 MHz 150 miles
4 MHz 100 miles
6 MHz 75 miles Anytime
8 MHz 70 miles day or night
12 MHz 50 miles
16 MHz 50 miles
VHF Band 156 MHz 8 miles 25 miles to Coast Guard
page 15
Sky waves give you the very longest range thanks to the what to expect in solid communication range to distant ship and
shore stations
2 MHz Sky waves absorbed 1000 miles
4 MHz Sky waves absorbed 1500 miles
6 MHz 500 miles 2000 miles
8 MHz 700 miles 3000 miles
12 MHz 1500 miles Worldwide in the
direction of the sun
16 MHz 3000 miles Worldwide in the
direction of the sun
until 8 pm local
22 MHz Worldwide Little sky wave
reflection after sunset
25 MHz Worldwide Little sky wave
reflection after sunset
As you can see to talk further go to a higher frequency outyou can sometimes select a frequency that is too high This
may cause your sky wave signal to actually bounce over the
station that you wish to communicate with or go off into space
If your signal is literally skipping over the desired station switch to a
lower a few weeks of tuning your receiver to different stations you will
be able to anticipate which band will be the best for a particular time of
day to talk to a specific station hundreds or thousands of miles away
Try tuning your set during the day and then at night and listen to the
page in range Switch between bands and begin to get a feel for
how the ionosphere causes signals to skip long distances and some
times short telephone shore stations make it easy to predict the best band
to establish rocksolid Every four hours they read a
traffic list calls being held for vessels at sea as well as ocean They transmit this information on each one
of the authorized bands Simply switch bands while they are and determine which band offers the best reception Where you
hear them loudest is where they will hear you best After they finish
with their traffic list give them a short call and you have thanks to sky waves and Mother ionospheric mirror
Band and Channel easy to program additional frequencies and channels with marine transceivers You dont
need to purchase expensive plugin crystal elements Everything is and your modern ICOM marine SSB receives from 5 MHz
through 29999 MHz and transmits from 16 MHz to 27500 MHz
The marine service uses specific channels to frequencies between 4 MHz and 275 MHz This book has a
listing of channels and frequency assignments in the appendix On the
2 MHz band we use actual frequencies not International Union ITU channel designators We use ITU on frequencies between 4 MHz and 275 MHz
Most mariners will use about 10 frequencies in each marine band New
ICOM marine SSB transceivers offer over 300 channels that for voice and an additional 600 channels for
page 17
email ICOM marine transceivers also offer over 100 channels that perfect for ham frequencies shortwave stations weather facsimile frequencies and
just about any that you might want to tune in and listen
You can add change or delete frequencies yourself by entering the
proper numbers on the keypad Most ICOM marine electronic dealers
can custom program local frequencies to save you the time of entering
them into memory using the key pad
Did You Know
Your ICOM marine SSB can also work in any mode in
cluding lower sideband or ham channels on 40 meters and
80 meters without the need to buy an expensive lower side
band your range by selecting the appropriate bands If
youre not going to be communicating halfway around the world then
dont program many channels above 16 MHz If you are only going to
Mexico or to the Caribbean load up on 4 MHz 8 MHz and 12 and channels More than likely these frequencies and chan
nels are already loaded into your 18
Equipment Selection and your marine SSB in a place that is convenient for radios are large and heavy They should be positioned for easy
access to all controls Most of the time your SSB set can nestle right
along with your other nav gear
You can build the equipment into your instrument panel however you
should provide some ventilation Many new SSBs are fan coded and
there needs to be a source of fresh air to facilitate this process Every
thing on the inside of the radio is and slight amounts of
heat are actually good for the equipmentit dries things out
We recommend keeping the equipment down low for easy
channel selection Make it comfortable to operate Some
night in a cozy harbor you may wish to simple flip through
the worldwide frequencies to pick up some action You
want the set as accessible to your hand as possible without
any undue SSBs have a builtin speaker that faces forward having to purchase an external speaker which is required
when the builtin speaker is located elsewhere A good carpenter can
build a teak frame that will make the equipment look nice An
anodized aluminum trim kit is also available from your ICOM dealer
A heavyduty mounting bracket is shipped with each rig to it from below or hanging from above
Once you have selected an ideal location for mounting the on because well take a look at power requirements antennas
and page 19
x Installation Antenna Tuner Mounting Locations
1 Aboard sailboats the automatic antenna tuner normally
feeds an insulated section of rigging such as a backstay or
on a ketch a mizzen sidestay The automatic tuner hides
away below near the chain plate that holds this particular
insulated stay The automatic tuner should go as far
away from the radio as possible in order to minimize RF
FCC rules require the active antenna tuner to be located as
far away from people as possible In other words dont
mount the tuner in an area where someone could actually
touch the high voltage output single wire 2 The automatic tuner requires no specific orientation You
can hang it vertically or horizontally You should insure that
it will stay relatively dry and the water drain screws if any
are at the low point of the unit if it is going to get wet
3 Remove the drain screw to provide an es
cape path for trapped 20
4 Aboard powerboats the automatic antenna tuner normally
feeds a fiberglass whip If possible mount the tuner up in
the flying bridge area well protected from the weather
Mount it as far away from the helm as possible If there is
no flying bridge on the powerboat the tuner may be mounted
near the base of the white fiberglass whip
5 The wire feeding your antenna system is highvoltage
GTO15 It is available at most marine electronic stores
Although it looks like coaxial cable it is not The jacket
contains no internal braid This means the highvoltage
single wire is part of your active antenna system and should
be routed far away from other wires aboard Keep it away
from sleeping quarters or areas where crew members might
sit Its always a good idea to keep everyone at least 5 feet
away from the GTO15 antenna lead wire
Did You Know
It is normal to hear your automatic tuner make a clicking
sound during tuneup What you are hearing are the inter
nal relays inductance and capacitance for the
best possible match The clicking will normally stop after
about 5 seconds of initial tuneup The tuner will remain
silent during normal on marine SSB The
clicking sounds during normal tuneup are a positive indi
cation that your system is performing as it should How
ever if the clicking continues for more than 10 seconds
chances are the tuner is missing its ground connection or
the antenna connection up on deck
page 21
Grounding grounding or counterpoise techniques are absolutely necessary
for maximum single sideband range Half your antenna is your ground so dont skimp here The radiating portion of your
antenna needs to see a mirror image of itself before it will send out
your SSB signal This mirror image called a counterpoise is created
by using metal surface and seawater as your radio plane
Your marine single sideband system will not perform if
you dont have a good counterpoise system Poor counterpoise poor range This is especially true on lower frequencies where
large RF grounds are required for good range
If you make direct contact with the seawater you may be able to
reduce the amount of ground foil that must be run from your radio and
the automatic tuner If your throughhulls are metal and are all bonded
with a green wire per ABYC American Boat Yacht find a couple of inwater bronze and run the
foil directly to them for an effective seawater ground But make sure
that bronze throughhull is already part of your bonding system with a
telltale green wire attached to it and going off to other Never ground to a bronze throughhull that has been left isolated and a wire brush to
clean up the neck of the throughhull and then use
a hose clamp to affix the copper foil to that throughhull Bunch the
foil up a few times to provide a good solid connection where it wont
easily rip
page 22
If there are several bonded underwater throughhulls near
your automatic antenna tuner your grounding will be easier
You might only need 50 feet of ground foil to complete the
entire process Direct contact with seawater improves any
RF ground thing for a youll need more ground foil because
your automatic antenna tuner is probably mounted up top on the In this case you will need to follow a wire run channel from the
top of the flying bridge down below decks and down to the bilge area
where you can make connection to underwater You could
even use a metal tube that may already be in place as part of your
ground foil run
Why foil Round wires
create inductive reactance
at radio frequencies and are
not effective as a good
grounding conveyance Use
2 or 3 inch wide 3 mil
copper foil available at
most marine electronic
stores to achieve a good
seawater ground
Your counterpoise system
needs to begin directly
below your antenna feed
point if at all possible When
you use an antenna coupler
we will consider this as the
Use 3inch wide 3mil copper foil to
ensure a good sea water ground
page 23
An ideal counterpoise for all frequency single side band work of up to 100 square feet of metal surface area directly below While this may sound
like an impossible number of square
feet to achieve consider the following large surface RF ground already available to you
Tanks Stainless steel tuna Propeller and shaft Chain plates
Encapsulated lead keel Engine block
Bonded can develop your own large surface area RF ground plane system by fiberglassing into your hull copper screen or 23
inch wide copper foil strips Its too bad they didnt build in the ground
plane when they laid up the hull isnt it
It will probably take you about a day and a half and a hundred feet of
copper foil to create a good capacity ground plane below the water
line You will be running copper foil inside your hull for a to the seawater No the foil does not go on the outside of the
hull The fact that the ground foil is close to the seawater makes all on transmit and receive range While it might be an effort to
get all this foil below the water line it will really make the you press down on your microphone key
Did You Know
Your bonding of underwater metals that are already tied in
with a common ground wire will not affect your corrosion
control system If your present underwater metals are not
all bonded together you may wish to lay out a RF ground
system independent of an actual connec
tion to the seawater but thats not really other copper foil leads go directly to the antenna tuner The tuner
will have a ground terminal to which the foil is attached Do not 24
the size of the foil as you approach the tuner or the radio Also do not
convert the foil to wire as you approach the tuner or the radio Fold the
foil back on itself and drill a hole for the mounting stud
Your RF ground system does not actually need to
contact the seawater to be effective Even though an encapsulate lead
keel doesnt actually touch the seawater it makes a capacitive ground
by being next to the seawater if you run wide copper foil to it
You may either double bolt the foil to an exposed keel bolt or actually
tap directly into the lead keel with a bolt going through the copper foil
and into the lead
In attaching to remember it will improve you run foil between each throughhull Stainless steel hose clamps
are the best way to pick up these underwater metals Water tanks
copper hydraulic lines etc can also be connected with foil using
hose clamps
I know I know trying to get a good RF ground system
is a bit if you cant get at your keel bolt If this is
the case then drill into the keel and pull up some lead Any that doesnt use a poured keel is losing a tremendous amount of
potential in obtaining a super signal Only if your keel is made of lead
shot poured in fiberglass would you not elect to use it In any other
case where there is a large amount of surface area below the water
line such as a lead keel by all means use it in your RF ground It will save you many hours of trying to run more copper
foil and screen below decks
Good RF grounding techniques will also enhance your
overall protection from a lightning strike Lightning protection and good
RF grounding all have a common large amount of
surface area below the water line
Again I would like to mention that running wireeven battery cable
is not effective as an RF ground at radio wire looks like a good DC ground it looks invisible at most
page 25
radio frequencies Use foil and only foil Even aluminum foil will work
in a pinch You can even use aluminum air conditioning foil with
sticky on the back as counterpoise Wires wont work so forget about
using them
The more counterpoise the better your signal Ever wonder always have the loudest signals on the band They are
only using 100watt equipment and a standard 23foot antenna but
their signal literally bounces off of their gigantic TIP
Again RF grounding IS the key to single sideband super
range Its one of the few components of the installation
you can the copper is in place you can just about forget it It will do the
work for you We recommend applying a thin coat of paint or resin
over the copper to keep the salt water from tarnishing it While green
copper works just as well as bright shiny copper its a much more
sanitary installation to keep it isolated from the elements It also pre
vents tearing or other damage to the system
If you have soldered all copper joints you wont need to check However you may wish to clean up copper connections fittings every couple of years
Since these connections are
made with hose clamps there is the possibility that the contacts may
get corroded after a few years in the bilge A steel brush should bring
both the copper and the throughhull fitting up to a nice shiny surface
and you can make your connection again
The periodic inspection of your copper ground system you can be
assured that your signal will stay loud and 26
x Ground System Review
1 The automatic tuner must be connected to a good electrical
ground A good ground prevents shocks interference and
numerous other problems One example of a good ground
is the nearest metal member on a metal vessel For best
results use metal strap or foil Make the length as short as
2 Good ground systems on wood or fiberglass boats are more
difficult to install For best results use strap or foil con
nected to the keel tanks or other large metal you have no way of contacting the seawater you could install for each band of frequencies used above 4
MHz as shown
in the figure This would be a last plates We save the underwater ground plate as an absolute
last resort for a antenna system that is working off of
an automatic antenna tuner Ground plates provide terrific contact to
the seawater and also have good connection points to attach the foil
The porous ground plates dont achieve any better ground than if you
were to come up with your own copper plate but they do provide a
superior means for mounting them through the hull Using a ground
plate as a RF ground may cause interference with other on board elec
tronics using the same ground plate as a DC ground
page 27
The automatic antenna tuner performs best with a direct seawater Whether it be through your bonded or to a dedicated ground plate the direct
connection is
one great way to minimize hours spent in the bilge developing a
goodground system
A capacitive ground system made up of copper strips run
around the hull below the water line or individual copper
strips at onequarter wavelength sections is one way to
achieve a good ground but may take several days to lay
into the hull and keep dry Why not go for the direct sea
water contact and establish your ground
connection in hours instead of days
x Typical following figure shows a typical installation Any radio system operating with a whip antenna or long wire back stay must have an adequate
ground the overall efficiency of the radio installation is at low 50 ohm output impedance of the transceiver makes it necessary to
employ antennas of the trapped or externally matched type The use of
an antenna coupler in conjunction with a whip antenna or long wire
antenna insulated back stay allows an efficient installation which will
cover all HF marine bands
Of course those of you with aluminum hull vessels your
RF groundplane is your hull and youll probably
have the loudest signal anywhere in the world No further RF
grounding is 28
CHAPTER achieve the ultimate in long skywave range you need an that is a minimum of 23 feet long tied into your tuner The longer the antenna the
For powerboats your antenna will be a 2 or 3piece fiberglass whip
The fiberglass whip on a powerboat is mounted on the port or
starboard side with an upper support bracket It is fed with single
wire GTO15 that connects the whip to the nearby automatic This whip is sufficient for most sailboats insulating one of the stays in the clear is the
best way
to achieve an antenna system that is between 30 feet and 70 feet long
An insulated backstay is the most popular choice The put on by professional riggers The rigger should place the top
insulator at a point where it is about 3 feet from the mast The bottom
page 29
insulator on a single
backstay is placed at eye
level Any lower and some
one might actually touch
the hot part of the antenna
Any higher and its tough
to service the connection
point Keep it at eye level
On a split backstay where
the split is below the mast
head use three 3 insula
Use a stainless steel hose clamp or brass kearny
tors The top and bottom in
nut to make your connection sulators are installed on the
side of the backstay to be
used as the antenna The other insulator should be placed near the top
of the split leg as close to the Y as possible This effectively takes the
split out of the antenna system Run the GTO15 up the stay to a point
above the lower a stainless steel hose clamp to make your connection You can also
make the connection with a brass kearny nut available at Make sure that there is a good contact between the GTO15
single wire and the insulated stay NEVER USE COAX Use riggers
tape to completely seal the connection and at least once a year check
your connection to insure it is making a good electrical contact with
the stay
On a ketch you can insulate either the port or the starboard main stays
or you could insulate a mizzen stay and achieve good
results I like the mizzen stay better than the port or starboard stay
because it is more likely to be outside of and away from other you provide an antenna that is part of your rigging that is
surrounded by other rigging you lose valuable transmission and re
ception range On sailboats with all sorts of grounded rigging your
antenna must be outside of this rigging and in the clear to transmit
and receive over long 30
If your insulated stay may come in contact with other metals or could
be touched by someone on deck use riggers tape or plastic stay covers
to keep it isolated Always keep in mind that everyone on deck needs to
stay away from your transmitting antenna when you are actually on the
air with the microphone keyed On receive the antennas are
harmless But on transmit new FCC rules require everyone stay clear
of the radiating where ever you install GTO15 a hot part of your
antenna system along a metal component of the vessel you should cut
any green bonding wire that connects that component to ground If
the backstay chain plate is bonded cut the bonding wire to that chain
plate If you have installed GTO15 next to a stanchion that be removed from the bonding system This prevents that
powerful SSB signal from
going right back to ground
rather than radiating from
your antenna
PreTuned 6Foot Whip
A pretuned 6foot whip
containing both ham and
marine radio frequencies
will work nicely on both
powerboats and sailboats
The whip does not require
an automatic antenna tuner
so what you pay for the
whip will actually be less
than what you would have
paid for an automatic an
tenna tuner Your range
with the whip is about 30
less than you would get
with an automatic tuner
connected to a long
Whip antenna mounted over a stailess steel rail antenna wire
page 31
The Whip Must Be Mounted Over A Horizontal Stainless Steel Rail
The whip cannot be mounted on wood nor can it be mounted on fiber
glass These pretuned whips MUST be over a horizontal rail with at
least 3 feet of surface area on each side of the whip
For sailboats the whip goes where you normally put the hibachi or
outboard motor Keep it away from the selfsteering metal wind vane or
wind powerboats the pretuned whip is placed over any horizontal rail
with the rail around the flying bridge most preferred This gets the
energy up and away from everyone down below Remember everyone
must be at least 5 feet away from any transmitting high system
The whip features plugin taps to cause the antenna to specific marine radio or ham radio frequencies Each tap point is
marked in MHz for marine band and meters for the ham band You
simply plug in the banana plug to the appropriate jack and you are on
the air with your selftuned antenna system
The selfresonant whip antenna gives good results up to a 3000 miles
range But each time you switch from one marine MHz band to an
other one you must send someone out to the whip to tap into band that you plan to operate on
page 32
Adding 12 Volts
Your transceiver will be shipped with a red and black power cord This
is your 12volt connection and it is fused
A 150watt marine single sideband transceiver can draw over 30 amps
on voice peaks Its only when you talk that current is consumed in
these proportions so dont worry its not 30 amps continuous out of
your battery when the mic button is pressed down
Its recommended to hook up your 12volt connections directly to your
ships battery system This allows you to stay on the air in case of a
malfunction of your electrical panel This is when you may need your
set the most
If you have some hefty 12volt wires leading from your battery com
partment to your fuse panel a second choice would be to go ahead and
make your connection at the instrument panel Clip off large amounts
of extra power cable but always leave enough coiled up behind the
radio so you can pull it from its mount with enough cable to work on
the set turned on
Route your power cable along the same track as your RF ground foil
Watch out for those sharp edges so that they dont nick the cable Dont
even think about using the RF ground foil as the black side of the are two separate ground systems One is for 12 volts
DC and the other is for radio wire lugs to attach the cable to the terminal strip The radio power
lead is already fused you do not necessarily need to go through an
external circuit breaker you can if you want but that adds one more
weak link in your power cable page 33
If you run the power cable to your battery system choose
a battery that is less apt to fail in an emergency It you have
a separate battery that is located above the water line
choose it in case of flooding Just as soon as seawater
covers your batteries you are off the airjust when you
wish you were on
If you need to extend the wires supplied by the factory see the wire
table below Make certain that any splices are well soldered and are
protected from the salt environment Soldering with radio solder is the
preferred method Measure the distance from the battery to the radio
Current AMPS
LENGTH 5 10 15 20 25 30 40 50 60 70 80 90 100
10 18 14 12 12 10 10 8 8 6 6 6 4 4
15 16 12 10 10 8 8 6 6 4 4 4 2 2
20 14 12 10 8 8 6 6 4 4 4 2 2 2
25 14 10 8 8 6 6 4 4 2 2 2 1 1
30 12 10 8 6 6 4 4 2 2 2 1 10 10
40 12 8 6 6 4 4 2 2 1 10 10 10 10
50 10 8 6 4 4 2 2 1 10 10 20 30 30
60 10 6 6 4 2 2 1 10 20 20 30 30 40
70 10 6 4 2 2 2 10 20 20 30 30 40 40
80 8 6 4 2 2 1 10 20 30 30 40
90 8 4 4 2 1 10 20 30 30 40
Use 3 voltage drop for any critical application affecting the safety of
the vessel or its passengers bilge pumps navigation lights electronics etc
page 34
CHAPTER Noise that you have your SSB station completely installed its time to
turn it on and start listening to the bands Your antenna tuner system set close enough on receive that you should hear plenty
of signals Notice that there is more atmospheric noise on the than the higher frequencies With your engines and other
motors turned off the noise is the usual type of background on every band until a signal appears
Strong signals will usually completely mask out noise
Weak signals on 2 and 4 MHz will only quiet the noise by
about 50 percent The more sensitive your receiver the
more atmospheric noise you are going to pick upthis is
normal Poor receivers dont pick up backgr ound noise is always thereon any frequency but louder on
lower frequencies It can not be filtered outto do so would also cause
your distant radio signals to fade away
The noise that can be filtered is electrical noise generated by the
ignition system of your engine plus noise from other motors lights also create noise that is usually heard on the Other noise sources fans battery
inverters computers and battery noise sources should be filtered at the spot they are gener
ated There are filters for alternators and filters for fluorescent lights
You can put resistor spark plugs on your gas engine and filters on your electronic tachs Fuel pumps can be quieted
down and bait tanks silenced with specific filters designed for interference source
page 35
Tune in a relatively weak signal on your SSB set and then
start the engine If the signal is still there your interfer
ence noise problems are few However if the signal com
pletely will need to get some filters for
each noise interference source
For noises and interference external to your boat such as a passing
skiff with an outboard that can be heard clearly on your SSB set
simply turn on your noiseblanker switch on the front of your radio
This will cancel out the repetitious popping sound almost may also help on your fluorescent lights Although the into your set is one way of
dampening noise noise
filters at the source of the noise are the best way to go Like you must methodically get every single one
page 36
Your FCC License
Did You Know
Marine SSB operation still requires a Federal Communi
cations Commission marine station license as well as a
restricted operators permit Even though the Federal
Commission has stopped licensing
certain VHF radio systems your longer range marine single
side band still needs the proper call Form 506 must be completed following all instructions carefully
If you already have a valid VHF license you will still use Form 506
but indicate that you are requesting a 506 is rather complex but give it your best try by indicating fee
type code as PASR and a licensing fee for 10 years at 75 Be sure
to answer Yes on requesting a new or modified maritime identity number This will give you capabilities for the category of transmitters for VHF all
EPIRB types SSB for
both bands radar at 93009500 MHz RTTY and satellite If you
already have a selective call number be sure to list it Same for your
INMARSAT numberif you have one list it
Read the fine print on the form and then send it on to the Commission It may take several tries to get the
license to go through but when it does you will be all set for your new
marine SSB FCC Form 753 for your personal operators permit This is
called the restricted operators permit and its necessary for all If you will be carrying passengers for hire you also need
page 37
a marine radio operators permit This requires a simple to make sure you know how to run and operate a marine For information about the marine radio
operators permit
and a simple book that prepares you for the test call 1800 6699594
and ask for the Gordon West Commercial General book
The Federal Commission may also have these forms
on the lnternet and you may be able to go on
line and apply for all of this right at the 38
Going on the Air
Your new marine SSB transceiver has been by a dealer or distributor that sold the equipment It is easy
to reprogram different frequencies into your new equipment Refer to
your owners manual for programming instructions Its just as easy as
pushing buttons on your telephone Go on give it a try
The Federal Commission requires that your license is valid and covers the frequencies 2000 kHz to 27000
kHz or 2 MHz to 27 MHz before transmitting Make sure you have this
license posted before going on the air
If you followed the installation instructions precisely for both your
radio equipment and the automatic antenna tuner your radio up to If you have any questions you might want
a technician to check it out The instruction manual with your new
ICOM SSB lists several ways to verify full power output
Before transmitting on any frequency listen In fact spend
a complete week listening to different frequencies and
different bands to get a feel for how marine SSB commu
nications take place
When listening to shiptoship and shore station calls
you will generally hear both sides of the conversation This will give
you an idea of how shiptoship take place to give your official FCC call sign at the beginning of at least once every 10 minutes and when you sign
When tuning into the shiptoshore marine telephone station you will
only hear the shore station side of the conversation The frequencies are duplex Ship stations transmit on different
page than the shore stations Your ICOM SSB where to transmit when tuned to the shore station The very professional marine telephone operators and
service technicians will expertly ask you the questions about where
you are who you are and what number you want Simply follow and you will have no problems communicating through
the telephone service
The same thing holds true with the United States Coast Guard You will only hear the shore side of the conversation The
United States Coast Guard personnel expertly extract all of the infor
mation they need for any emergency Once again do a lot of making any your first call will be for a radio check Dont use the United
States Coast Guard or 2182 kHz for radio checks as they have far matters than giving out signal reports all day long
When you are ready for a radio check try the distant high seas Wait until they are finished with their local weather giving them a call Always
choose the band that sounds the
strongest to you
Follow the procedures for initiating a call in the upcoming chapters of
this handbook The marine telephone companies it theyre not real busy
are more than happy to accommodate a radio check
You can also receive radio checks from other pleasure boats that you
might hear on shiptoship frequencies Most commercial vessels will
probably ignore any calls for radio check so try to select one that sounds
like a fellow pleasure boat mariner and exchange You should generally receive reciprocal reports If a very weak to you they will probably say that
you are weak to
them Same thing with the telephone service if theyre not coming in
strong you wont either
Weak signals are not necessarily a result of something wrong with Sometimes ionospheric band conditions simply wont
page 40
favor any particular single sideband band Try the next band up to
improve signal reports Try a different time of day and expect that
some days youll have better signal levels than others
Did You Know
Since your radio waves are solely dependent on ionospheric
conditions its quite normal for signal levels to change
You may also notice that signals will fade in and out on the
higher frequencies such as 12 to 27 MHz Again this is
completely normal and should result in almost no loss of
during a fun way to check the operation of your equipment is to
receive as many foreign broadcast stations as possible Refer to the
back of this book for a listing of international shortwave These stations should normally come in loud and clear but
are still subject to 20 second fades If you are hearing plenty of activity
on these frequencies plus strong signals from other boats and chances are your installation is working fine and you will
enjoy worldwide with single sideband you decide to have a licensed technician check out your marine electronic dealerships will be more than happy
to send a
tech with the proper field strength equipment to sign off your you completely installed the equipment yourself there will be
little that the technician will need to do other than to check out your
antenna tuner setup double check all connections to insure that they
are weatherproof and to make some field strength measurements and
exchange signal reports with distant stations Since are quite familiar with the of frequencies they can quite accurately assure you that your
set is on the air and operating perfectly If there is any way that they
can squeeze a few more watts out of your system they will also do
that Have them sign your log book with their license number to
further verify that your system is 100 percent go
page 41
Operating Procedures Distress Urgency
and Safety
If you have an emergency plan to use your VHF set as well as your
marine single sideband to call out for help If you are within 100 miles
of the shore first try your VHF on the international distress 16 If you are far out to sea and do not receive on VHF Channel 16 your next step is to
switch to try 21875 kHz the international distress call for marine If after three attempts you do not receive an immediate reply
to your distress call then switch to any frequency where you hear The marine operator is always a good one Use any frequency
on your marine sideband that will get a response from another are the procedures for placing or acknowledging a distress call on
your marine single side band as well as for your VHF These are the approved procedures as outlined by the
Radio Technical Commission for Maritime Services in cooperation with
the Federal Spoken Emergency are three spoken emergency signals
1 Distress Signal MAYDAY
Distress signal MAYDAY is used to indicate that a mobile
station is threatened by grave and immediate danger and
requests immediate assistance MAYDAY has priority over
all other 2 Urgency Signal PANPAN Properly pronounced
Used when the safety of the vessel or person is in 42
Man overboard messages are sent with the Urgency
signal PANPAN has priority over all other communica
tions with the exception of distress traffic
3 Safety Signal SECURITY Pronounced Used for messages concerning the safety of navigation or
giving important warnings
Any message headed by one of the emergency signals or SECURITY must be given precedence over This means listen Dont transmit Be prepared to help
if you can The decision of which of these emergency signals to use is
the of the person in charge of the vessel
x Alarm Signal notes indicate this rule changes in
1999 21875
This signal consists of two audio frequency tones This signal is similar in sound to a twotone siren used by
some ambulances When generated by automatic means it shall be sent
as continuously as practicable over a period of not less than 30 seconds
nor more than one minute The purpose of the signal is to attract the
attention of the person on watch or to actuate automatic alarm devices
The alarm signal shall be used only with the except in the situation discussed in the with the Urgency Call and Message Distress Call and
Distress Call and send the Alarm Signal if available
1 Distress signal MAYDAY spoken three times
2 The words THIS IS spoken once
3 Name of vessel in distress spoken three times and call
sign spoken once
page 43
The Distress Message immediately follows the Distress Call and
consists of
4 Distress signal MAYDAY spoken once
5 Name of vessel spoken once
6 Position of vessel in distress by latitude and longitude or
bearing true or magnetic state which and distance to a
wellknown landmark such as a navigational aid or small
island or in any terms which will assist a responding
station in locating the vessel in distress Include any
information on vessel movement such as course speed
and destination
7 Nature of distress sinking fire etc
8 Kind of assistance desired
9 Any other information which might facilitate rescue
such as length or tonnage of vessel number of persons
on board and number needing medical attention color
of hull decks cabin masts etc 10 The word Distress Call and Alarm Signal if available for at least 30
seconds but not more than one minute
page 44
NOTE Repeat at intervals until answer is received If no answer is
received on the Distress frequency repeat using any other on which attention might be attracted
x of Distress Message
If you hear a Distress Message from a vessel and it is not YOU must answer If you are reasonably sure that the is not in your vicinity you should
wait a short time for others In any event you must log all pertinent details of the
Distress Call and of Receipt of Distress of receipt of a Distress Message usually includes 1 Name of vessel sending the Distress Message
spoken three times
2 The words THIS IS spoken once
3 Name of your vessel spoken three times
4 The words RECEIVED MAYDAY spoken once
5 The word OVER spoken Message
x Offer of you acknowledge receipt of the distress message allow a of time for other stations to acknowledge receipt if any are in
a position to assist When you are sure of not interfering with other
page contact the vessel in distress and
advise them what assistance you can render Make every effort to
notify the Coast Guard The message shall be sent
only with the permission of the person in charge of your Message
The Message usually includes the following
1 Name of the distressed vessel spoken once
2 The words THIS IS spoken once
3 Name of the calling vessel spoken once
4 The word OVER spoken once
5 On hearing an ending with the word
OVER from the distressed vessel continue with your
offer of assistance message
6 Name of calling vessel and radio call sign spoken once
7 The word OVER spoken be sent after a short interval of time but long enough to be sure that
further transmissions will not cause harmful interference and long
enough to work out relative position and time to reach the BLUE DUCKTHIS ISWHITE WHALEOVER
on hearing the word OVER from BLUE DUCK continue
x Urgency Call and Message Urgency Call begins with the emergency signal consisting of of the group of words PANPAN The Urgency Call and Message is
transmitted on
VHF Channel 16 or 2182 kHz in the same way as the Distress Call
and Distress Message The Urgency signal PANPAN indicates that
the calling person has a message concerning the safety of the vessel or
a person in jeopardy The Urgency signal is authorized for the following
Transmission of an urgent storm warning by an
authorized shore station
Loss of person overboard but only when the assistance
of other vessels is required
No steering or power in shipping Urgency Call and Message
The Urgency Call and Message usually include the following
1 The Urgency signal PANPAN PANPAN PANPAN
2 AddresseeALL STATIONS or a particular station
3 The words THIS IS spoken once
4 Name of calling vessel spoken three times and
call sign spoken once
5 The Urgency Message state the urgent problem
6 Position of vessel and any other information that will
assist responding vessels Include description of your
vessel etc
7 The words THIS IS spoken once
8 Name of calling vessel and radio call sign spoken once
9 The word Urgency Call and Message
Not involving possible use of alarm
page 47
PANPAN PANPAN or a particular station
x Safety Call and Message Safety Call headed with the word SECURITY three times is transmitted on the Distress and Calling Channel 16 or 2182 kHz
together with a request to shift to a
working frequency where the Safety Message will be given The may be given on any available working States Coast Guard stations routinely use the
Safety Call
SECURITY to alert boating operators that they are preparing to
broadcast a message concerning safety of navigation The call also
precedes an important warning The Safety is usually broadcast on Coast Guard Channel 22A 1571 MHz
and 2670 kHz Although recreational boating operators may use the
Safety Signal and Message in many cases they would get better results
and perhaps suffer less criticism by giving the information to the Coast
Guard without making a formal Safety Call The Coast Guard usually
has better broadcast coverage from its shore stations and the information if it is The Safety Call and Message
The Safety Call usually includes the following On VHF Channel 16
or 2182 kHz
page 48
1 The Safety Signal SECURITY spoken three times
2 AddresseeALL STATIONS or a particular station
3 The words THIS IS spoken once
4 Name of vessel calling and radio call sign
5 Announcement of the working channel frequency
where the Safety Message will be given
6 Radio Call Sign
7 The word OUT
The Safety Message usually includes the following Select frequency announced in step 5 above
1 The Safety Signal SECURITY spoken three times
2 The words ALL STATIONS spoken once
3 The words THIS IS spoken once
4 Give the Safety Message
5 Repeat the Radio Call Sign
6 The word Safety Call and Message
On VHF Channel 16
WA 1234OUT
On VHF Channel 68
WA 1234OUT
page 49
x Coast Guard Channels
The government frequency 2182 kHz and 2670 kHz are widely used
by recreational boating operators for communicating with US Coast
Guard shore stations and ship stations and with USCG when these vessels are operating under orders When using
these channels you must first establish on the appro
priate calling frequency 2182 kHz on the following long range Coast
Guard channels
Yo u r Yo u r I T U
Tr a n s m i t R e c e ive Channels
2182 kHz 2182 kHz None International distress
calling frequency to all
Coast Guard Rescue
agencies worldwide
2670 kHz 2670 kHz None US Coast Guard working
4134 kHz 4426 kHz 424 500mile Coast Guard
working channel
6200 kHz 6501 kHz 601 Gulf Coast Guard
working channel
8240 kHz 8764 kHz 816 Mediumrange Coast
Gaurd working channel
12242 kHz 13089 kHz 1205 Longrange 24hour Coast
Guard working channel
16432 kHz 17314 kHz 1625 Dayevening longrange
Coast Gaurd working
Consult your ICOM SSB frequency chart to see where these
channels are in your sets memory
x Operating Procedures Regular very important that you monitor a frequency at least one minute
prior to transmitting over it This insures that you wont cover up that may be going on that you might not hear clearly
at first Always wait until a frequency is clear before following procedures for operating your marine SSB are approved
by the Radio Technical Commission for Maritime Services in coopera
tion with the Federal following table describes the distress and safety 400027500 kHz for ship and coast stations public and
private operating voice HFSSB
41250 4 Safety
61250 6 Safety
82910 8 Safety
122900 12 Safety
164200 16 Procedures other than Distress Urgency and Safety
page 51
x Maintain a your marine VHF or SSB radio is turned on keep the re
ceiver tuned to the appropriate distress and calling frequency 1568
VHF Channel 16 or 2182 kHz This listening watch must be main
tained at all times the station is in operation and you are not The Coast Guard maintains a silent period on 2182
kHz for three minutes immediately after the hour and for three after the half hour During these silent periods only mes
sages or transmissions concerning distress or urgency are made
Since this watch is required for safety and to facilitate providing a common calling channel it is not permissible for one
vessel in a fleet of vessels traveling together to maintain this watch
while the other vessels guard another channel such as a channel You may maintain a watch on a working and may establish directly on that you
maintain your watch on the distress and
calling the times you maintain this watch in your Radio Log
x Choose the Correct Channel or Channels
Each of the marine frequencies and channels is authorized for a
specific type of It is required that you choose the
correct channel for the type of communication you are making For
example certain channels are set aside exclusively for intership use
See the following 52
50 miles Ship 2A 20650 Night
50 miles Ship 2B 20790 Night
50 miles Ship 2C 20965 Night
50 miles Ship 3A 3023 Night
150 miles Ship 4A 4146 Night
150 miles Ship 4B 4149 Night
150 miles Ship 4C 4417 Night
170 miles Ship 5S 5680 DayNight
200 miles Ship 6A 6224 DayNight
200 miles Ship 6B 6227 DayNight
200 miles Ship 6C 6230 DayNight
200 miles Ship 6D 6516 DayNight
400 miles Ship 8A 8294 Day
400 miles Ship 8B 8297 Day
1000 miles Ship 12A 12353 Day
1000 miles Ship 12B 12356 Day
1000 miles Ship 12C 12359 Day
5000 miles Ship 16A 16528 Day
5000 miles Ship 16B 16531 Day
5000 miles Ship 16C 16534 Day
5000 miles Ship 18A 18840 Day
5000 miles Ship 18B 18843 Day
10000 miles Ship 22A 22159 Day
10000 miles Ship 22B 22162 Day
10000 miles Ship 22C 22165 Day
10000 miles Ship 22D 22168 Day
10000 miles Ship 22E 22171 Day
10000 miles Ship 25A 25115 Day
10000 miles Ship 25B 25118 Day
page 53
x Calling Another Ship
Turn your on and listen on the appropriate distress and
calling frequency 2182 kHz to make sure it is not being used If it is
clear put your transmitter on the air This is usually done by depress
ing the push to talk button on the microphone To hear a reply you
must release this directly into the microphone in a normal tone of voice Speak
clearly and distinctly Call the vessel with which you wish to commu
nicate by using its name then identify your vessel with its name and
FCC assigned call sign Do not add unnecessary words and phrases as
COME IN BOB or DO YOU READ ME Limit the use of
phonetics to poor transmission preliminary call must not exceed 30 seconds If contact is not
made wait at least two minutes before repeating the call After this
time interval make the call in the same manner This procedure may be
repeated no more than three times If contact is not made during this
period you must wait at least 15 minutes before making your contact is established on 2182 kHz you must switch to working frequency for further You
only use VHF Channel 16 and 2182 kHz for calling and in switching to a working frequency is required to carry out the
actual it is often helpful to monitor the you wish to use briefly before initiating the call on
2182 kHz This will help prevent you from interrupting other users of
the channel
All should be kept as brief as possible and at the end
of the each vessel is required to give its call sign after
which both vessels switch back to the distress and calling channel in
order to reestablish the 54
Two examples of acceptable forms for establishing communication with
another vessel follow
on 2182 kHz
on 2182 kHz or some toher proper working channel
BLUE DUCK If unable to replay on the channel selected
on 2182 kHz an appropriate alternate should be selected
on working BLUE DUCK
channel 8A
on working MARY JANE
channel 8A
Continue w with message
ith m essage and
and terminate
BLUE DUCK within
c ommunication w ithin trthree
hree mminutes
inutes At
on working the
the end
end of
of the
the e each
ach vvessel
channel 8A g ives i
gives ts call
its call sign
on 2182 kHz DUCKWA 1234REPLY
on 4A
BLUE DUCK Continues message and terminate
on 4A as indicated in example 1
A short form most useful when both parties
are familiar with it
page 55
Using Your SSB for LowCost EMail
Marine SSB will accept the radio modem and computer on rear accessory plugs
Your new SSB transceiver may have many channels designated for nar
rowband direct printing NBDP These are frequencies for simplex
telex over radio SITOR which has been the established mode of mari
time for the merchant shipping industry for more than
50 years SITOR is electronic email over marine frequencies All you
need is a computer and a radio modem to complete the
marriage to your marine SSB With this equipment you will be able to
send and receive email over worldwide your laptop computer and a special modem and your new ICOM
SSB you can send and receive written text messages far than voice messages Written messages allow you to think
through what you want to say ahead of time format your in your computer and then send it off with a right from your vessel at anytime day or night
in the world Your SITOR onethird page of text can go in less than 2 or
3 minutes or often less than the minimum air time voice If you have several pages of text it could take up to but you are assured of solid copy at
the other end of the
page 56
circuit You can also receive email as well Inbound traffic for your
vessel is saved in your vessels own mailbox in the host computer until
you are ready to receive it People on shore can access the system by
the Internet or any one of the several commercial email system such
as CompuServe AOL Telex FAX or voice using the
public telephone system via any of the common carriers You can
also use your computer and your SSB to receive free of facsimile imagery directly from the Coast Guard You can also
receive highquality weather forecast charts in your mailbox at your convenience through private yacht email over marine SSB circuits are carried on
by more than
200 radio telex shore stations in the world as described in the of radio signals All of these worldwide data stations have in respect to
international billing arrangements for ships
of all nations which wish to connect to any foreign coast station along
the route of their voyage Two companies Globe Wireless and offer worldwide networks of pickup and relay stations with
only one to deal with as you make your These networks of coast radio stations are
designed to provide both spacial and channel capac
ity to all mariners around the globe Multiple propagation paths to
gether with automated control of the ships existing SSB
radio system provide transmission quality and link availability not pre
viously obtainable on similar voice circuits Traffic lists message traf
fic and other data services are sent throughout all of the world wide
network email stations and downloaded easily with your typical cost for a SITOR message is about 200 a minute 300 characters can be sent per minute
This works out
to be about three cents per word If you plan to send high volumes of
data on your computer on an almost daily basis PinOak Digital and
Globe Wireless offer other types of high speed data transfer systems
that allow you to send and receive messages in about onetenth the
time as normal SITOR
page 57
Did You Know
For more information about the Globe Wireless email
connection to your ICOM SSB contact Globe Wireless at
800 8767234
For more information about PinOak Digital High
Frequency Digital call 800 746625l
For more information about SAILMAN visit their
website at 16
Review SSB Channel friends with marine SSB may tell you
To talk local you want to go on 4A They sometimes call that 4alpha
Its good in the mornings and 4alpha on your set is 42 Some sets
have it as 41 but thats really 4S You can look up this channel as 451
which is really 4146 Got it
The mysteries of SSB get worse Did you know distress frequency 2182 kHz may NOT be the best place
to cry Mayday when you are halfway across the sea
Single Sideband
And if you call Mayday on Coast Guard working channel 816 or 1205
they could be duplexing a weather report and not listening to their
input frequency So WHO do you call in an emergency anyway on
marine SSB
And what about making phone calls Are you really charged 25 just
for getting an answering machine I am happy to report NO
page 58
So lets demystify that new marine SSB installation and compare the
channels and frequencies listed in this chapter with what is stored in
your SSBs memory
ALL THOSE CHANNELS Marine SSB frequencies are channels within the following megahertz regions
2 XX 2 MHz 100 miles day 1000 miles night
4 XX 4 MHz 100 miles day 1500 miles night
6 XX 6 MHz 500 miles 1500 miles night
8 XX 8 MHz 700 miles day 2000 miles night
12 XX 12 13 MHz 100 miles evenings 3000 miles
16 XX 17 17 MHz Unreliable evenings 4000 miles
22 XX 22 MHz Daytime only band band of marine frequencies skips off the ionosphere and back down to earth at different angles 2
and 4 MHz come back
down relatively close to your vessel 8 and 12 MHz are excellent day and night skywave skip contacts On 16 and 22
MHz skywaves fade out at night but offer the longest range during day
light hours The best range usually follows the direction of the sun
Choose the megahertz range that will skip your signal to distance you want to reach 8 and 12 MHz are the
favorites during the day and 4 and 6 MHz are the favorite bands
during the night 2 MHz is clobbered with noise and you wont get zip
22 MHz is too high for reliable daily contacts Choose 8 and 12 MHz
as your bread and butter bands
page 59
Marine radio channels are assigned ITU designators ITU stands Union and assigns every countrys marine SSB set
But there are differences between each manufacturer of SSB equipment
on how they read out the channels so stay tuned More to follow
Most 2 MHz frequencies have little use even 2182 MHz the and calling frequency The range is so limited you would do
better to squawk Mayday on VHF channel 16 Most 2 MHz by their actual numerical frequency kilohertz not by designators Lucky for us a kilohertz
readout on the radio dial
is common among all marine SSB radios in every country
4 MHz to 22 MHz marine channels are all listed by a threedigit or
fourdigit channel designator An example would be marine Channel
401 or marine Channel 809 or marine Channel 1206 These channel num
bers common worldwide are assigned to pairs of radio frequencies that
make up a radio channel Both the marine telephone companies of the
world and the United States Coast Guard and rescue agencies world operate on frequency PAIRS where they transmit on one fre
quency and listen on another This is called DUPLEX But you dont need
to worry about the individual frequencies for ship transmit and ship re
ceive because your marine SSB has all of these channels pre stored in ITU
memory If you dial up marine Channel 808 your set automatically re
ceives on 2740 kHz and transmits automatically on 8216 kHz It is pre
stored duplex so all you need to know is the channel number and what
service goes with which channel ATT runs the high seas maritime services
from three stations that serve this half of the world However in the
future access will be through station WLO out of Mobile Alabama
ATT will be limiting the service provided by KMI WOM and WOO
From Australia to Africa and everything in between the ATT offers you service on the following 60
401 416 417 403 412 417 410 411 416
804 809 822 423 802 810 808 811 815
1201 1202 1203 814 825 831 1203 1210 1211
1229 1602 1603 1206 1208 1209 1605 1620 1626
1624 2214 2223 1215 1223 1601 2201 2205 2210
2228 2236 1609 1610 1611 2236
1616 2215 2216
Choose the channel on a likely frequency that will skip
your waves into the particular ATT maritime services
station closest to you If youre in the South Seas you might
try Channel 1602 to ATT coast station in California If
youre in the Caribbean try ATT coast station in Florida
on Channel 403 And if youre sailing to Spain you might
to try ATT coast station New Jersey on 1203 Otherwise
use the WLO Frequencies listed below
WLO ITU Number RX Frequency TX Frequency
405 43690 40770
414 43960 41040
419 44110 41190
607 65190 62180
824 87880 82640
WLO ITU Channels continued on page 62
page 61
Channel Number RX Frequency TX Frequency
829 88030 82790
830 88060 82820
1212 131100 122630
1225 131490 123020
1226 131520 123050
1607 172600 163780
1641 173620 16480
1647 173800 164980
2237 228040 221080
Contact Rene Stiegler of WLO radio for information and
frequency information packs or or tuning these channels in now and listen to the shiptoshore traffic
You will hear only the shore side of the conversation because the ships
are transmitting duplex Phone calls cost under 5 a minute with no
landline charges There is a 3minute minimum so once you go for 3 minutes and make it a 15 bill If you get an
answering machine tell the operator to cancel the call and you pay
nothing Radio checks with ATT are free Calling the Coast Guard
through ATT is also free What Calling the Coast Guard through
the high seas marine telephone service Why
2182 kHz Distress 424 Working Weather AMVER
Channel 601 Working Weather AMVER
Channel 816 Working Weather AMVER
Channel 1205 Working Weather AMVER
Channel 625 Working Weather AMVER
page 62
These are United States Coast Guard weather AMVER and and are not necessarily monitored 24 hours a day for a
distress call These are the channels where you will hear Guard weather It is digital speech synthesized and will sound
like someone sitting on a fish hook
If you need the Coast Guard anywhere in the world call on the high
seas marine operator duplex channels I guarantee they are theyre looking to make money on an incoming phone call
They wont make money on a Coast Guard call because theyll patch
you through free But once your situation is stabilized the Coast Guard
will ask you to switch over to one of their working channels Suggest a
channel near the MHz band you are presently going through the
marine operator on Just look at your radio dialif its reading 1201
then you are on the 12 MHz band You would suggest to the Coast
Guard you can work them on ITU Channel 1205 Switch over and you
will hear their friendly voice
Did You Know
The Coast Guard tracks commercial shipping all over the
world on a computer in New Yorkand if you need help
or evacuation anywhere out on the sea they can probably
find someone within 300 miles of you and request them to
divert and lend assistance This is part of the Coast Guards
AMVER is where SSB radio manufacturers have split from the scheme Here are the channel designators that SHOULD
come up on your marine SSB for ship toship safety and routine calls
page 63
40 4125 kHz Safety 4S
41 4146 kHz ShiptoShip 4A
42 4149 kHz ShiptoShip 4B
43 4417 kHz ShiptoShip 4C
60 6125 kHz Safety 6S
61 6224 kHz ShiptoShip 6A
62 6227 kHz ShiptoShip 6B
63 6230 kHz ShiptoShip 6C
64 6516 kHz ShiptoShip 6C
80 8291 kHz Safety 8S
81 8294 kHz ShiptoShip 8A
82 8297 kHz ShiptoShip 8B
120 12290 kHz Safety 12S
121 12353 kHz ShiptoShip 12A
122 12356 kHz ShiptoShip 12B
123 12359 kHz ShiptoShip 12C
124 12362 kHz ShiptoShip 12C
125 12356 kHz ShiptoShip 12E
160 16420 kHz Safety 16S
161 16528 kHz ShiptoShip 16A
162 16528 kHz ShiptoShip 16B
163 16534 kHz ShiptoShip 16C
228 22159 kHz ShiptoShip 22A
229 22162 kHz ShiptoShip 22B
220 22165 kHz ShiptoShip 22C
224 22168 kHz ShiptoShip 22C
225 22171 kHz ShiptoShip 64
Not all marine SSB transceivers list these shiptoship
channels by the ITU duplex number Most ICOM marine
SSB transceivers list shiptoship simplex frequencies by
the megahertz band a hyphen and numbers 1 through 9
Sometimes the number l and 2 correspond with shipto
ship A and B channels yet other times they number up
from the safety channel so A now becomes 2 But not to
worry just double check the frequency with the shipto
ship channels and frequencies I have just listed and go
with the safety channels are restricted to navigation Safety and similar to what takes place on marine VHF channel 6 No
gabbing on the marine SSB safety channels The marine shipto ship
channels may also be used by private coast stations so you can talk
from ship to shore and bypass the marine operator Towing and
salvage companies plus marine stores regularly conduct business channels 4A 8A and 12A Now go back to the list and
double check the 4A 4146 kHz
8A 8294 kHz
12A 12353 kHz
Find these channels on your own SSB radio and verify the agreeing with the actual coast youre cruising the Federal Commission offers ad
ditional 4 MHz and 8 MHz channels for shiptoship will relieve all of the congestion now found on popular channels
4A 4B 8A and 8B At last secret shiptoship that are perfectly legal under FCC Rule 80374 b c
page 65
4000 8101
4003 8104
4006 8107
4009 8110
4012 8116
4015 8119
4018 8122
4021 8125
4024 8131
4027 8134
4030 8137
4033 8140
4036 8143
4039 8146
4042 8149
4045 8152
4048 8155
4051 8158
4054 8161
4057 8164
page 66
The FCC Rules state These frequencies are shared with and marine shiptoship operation must not cause to those other services In other words if you
and a
cruising buddy land on a frequency and overhear shore about your shiptoship switch off that
channel in the table above
Shore stations will continue to monitor their regular frequencies on 4
and 8 Alpha and Bravo frequencies no charge But mariners wishing
to shiptoship on 4 MHz and 8 MHz may now switch
to these new very quiet SSB channels in full compliance with FCC
rules In fact 4030 MHz is fast becoming the Baja intercom channel
for mariners with SSB the Caribbean to Panama canal try 4054 Hams in the canal listen
7083 to 7085 lower sideband
Pacific Coast 86801 kHz
Pacific 127281 kHz
Hawaii 110881 kHz
161331 kHz
Hawaii 99806 kHz
New Gulf Frequencies 4316 8502 12788 kHz
Boston 63405 kHz
Atlantic 108632 127481 80781 15957 kHz
page 67
You might also memorize aeronautical East Coast and West
Coast tower channels 13282 and 13270 kHz I would also
fill up one of those memory channels
with 13300 and 5547 kHz both upper sideband aeronau
tical inroute frequencies If you cant raise the Coast
Guard in an emergency squawk Mayday to an airliner
Its been done before
FCC rules prohibit a marine radio being shared with another But if you are a voluntary equipped boat you are not required
by law to have a marine radio onboardso one day you consider it a
marine radio and the next day you consider that marine radio a ham
radio Trust me It works but only if the marine radio has unleashed as an amateur radio
You could store the ham FREQUENCIES into any one of the 100 or
more marine channels on a modem ICOM marine
SSB radio A sample
3968 kHz lower sideband West Coast marine nets
7268 kHz lower sideband East Coast waterway net
7238 7294 kHz lower sideband morning West Coast nets
14300 kHz upper sideband 24hour ham maritime mobile nets
14340 kHz upper sideband West Coast 11 00 am maana net
14313 kHz upper sideband Pacific evening maritime net
21402 kHz upper sideband Pacific and South Pacific
You need an amateur license to talk on these frequencies but you dont
need a license to listen and glean great weather information In an emer
gency you can holler for help on these frequencies without any ques
tions asked But it better be a real emergency You know
how hams are Im one of them too
page 68
Finally your SSB transceiver can be put into the AM double and the time signals and shortwave broadcast frequencies memo
rized to get uptodate weather information the correct time and the
latest news from BBC and Voice of America
5 10 15 and 20 MHz time signals
5975 kHz AM shortwave
7435 kHz AM shortwave
9575 kHz AM shortwave
11 835 kHz AM shortwave
13760 kHz AM shortwave
15120 kHz AM anywhere around these AM shortwave frequencies for plenty of
foreign and USA best radio check is with the high seas marine operator You must
call them for a minimum of 45 seconds in order for them to beam you
in with their massive antenna systems A quick call will lead to no
contact Make it a long call giving your vessel name official FCC call
sign or ship registration number your position the ITU channel you
are communicating over and repeat the process over and over and over
and over again for 45 total seconds Close talk the micpush the plas
tic right up against your lips If you talk 6 inches away from the mic
your power output will be zilch SSB mic are all noise canceling and
you must absolutely touch the mic to your lips to get a signal out on you talk you may notice your panel lights blinking your anemom
eter exceeding 100 knots your electric head going into the and various other pieces of marine electronics including autopi
lots going nuts on transmit This is perfectly normal It means out one walloping signal You must live with it There is no
simple cure
page 69
Your radio check to the marine operator should finally
achieve success on one of their working channels If one
megahertz band doesnt work dial in another marine op
erator in another part of the country and give THEM a try
Or tail in at the end of another ship contact when
the marine operator is ready to sign off If you can hear the
marine operator well they should pick you up as well
One of the best radio checks is from the technician that installed the
marine SSB Dont let them off the ship until they reach a at least 1000 miles away and get a good radio check on the
air Accept no excuses I have seen marine SSB installations that LOOK
good on a wattmeter but over the air SOUND bad An automatic antenna tuner cable rectifies the RF wave and brings
it back into the radio scrambling your audio to sound like you are
talking underwater You cant see it on a meter but youll sure know
you have this problem if absolutely nobody comes back to your
request for radio checks
With more and more calls going satellite aboard ships
be assured that the high seas marine SSB service is
looking for more activity out there on the airwaves and the eager to get you into their computers and will regularly run radio
checks with you to give you the confidence of knowing they can reach
out almost anywhere to take your incoming or outgoing phone call
Radio checks are 70
Did You Know
The marine SSB radio manufacturers are delivering equip
ment designed more for the radio guru than the active sailor
with things on the mind other than is 451 really 41 or is it
really 4alpha ICOMs M710 marine SSB has the capa
bility of programming the screen to read out the channel
function in addition to just the channel number and fre
quency Great idea
A marine SSB is a powerful device for and sailing Know its capabilities and know what the
channels can do for you There is absolutely nowhere in the world that
you could cruise that you couldnt get back to a shoreside station on
marine SSB on one of the megahertz bands EVERYWHERE there are
domestic and foreign shoreside stations ready to take your duplex chan
nel activity The modern marine SSB has all of these channels in
memory Now you know where to go to make that or emergency distress call
page 71
Country Station Name Call ITU Channel
ALBANIA Durres PT Radio ZAD 402 805 1206 1639
ALGERIA Alder Radio 7TA 410 413 424 426 601
603 605 802 809 813
825 1207 1215 1217
1232 1629 1631 1636
1641 2205 2225 2227
ARGENTINA Bahia Blanca Radio LPW 406 421 601 818 821
Corrientes Radio LPB 424 810
General Pacheco Radio LPL 413 421 426 603 606
802 814 821 1220
1221 1601 1621 2204
Ushuaia Radio LPC 410 812 1230
AUSTRALIA Adelaide Radio VIA 419 424 603 817 1227
Brisbande Radio VIB 404 415 424 603 811
Broome Radio VIO 424 603
Carnarvon Radio VIC 424 603
Darwin Radio VID 415 424 603 811 815
1227 1229
Esperance Radio VIE 424 603
Hobart Radio VIH 424 603
Melbourne Radio VIM 404 424 603 811 1226
Perth Radio VIP 404 424 603 811 1226
Rockhampton Radio VIR 424 603
Sydney Radio VIS 405 417 424 603 802
829 1206 1231 1602
1610 2203 2223
Thursday Island Radio VII 424 603
Townsville Radio VIT 419 424 603 817
AZORES Miguel Radio CUG 426 813 1207 1615
1632 2207 2222
BAHRAIN Bahrain Radio A9M 413 806 1209 1618
page 72
Country Station Name Call ITU Channel
BANGLADESH Chittagong Radio S3D 402 416 421 602 806
821 1202 1221 1603
Khulna Radio S3E 418 416 421
BARBADOS Barbados Radio 8PO 407 816 825 1213
BELGIUM Oostende Radio OSU 408 411 417 421 422
425 602 606 803 805
806 812 813 815 821
829 1207 1213 1215
1218 1219 1221 1609
1613 1621 1625 1627
1630 2209 2214 2219
2221 2225 2239
BERMUDA Bermuda Radio VRT 410 603 817 1220
BRAZIL Belem Radio PPL 404 405 419 819 821
822 830 1228 1633
Fortaleza Radio PPF 819 821 828
Ilheus Radio PPI 404 405 819 821 824
Itajai Radio PPC 404 405 819 821 822
Juncao Radio PPJ 404 409 419 819 821
824 828 1228 1617
Manaus Radio PPM 404 405 416 819 821
Natal Radio PPN 404 409 819 821 830
Olinda Radio PPO 404 405 419 821 824
828 1211 1606
Rio Radio PPR 404 405 409 416 419
819 821 822 828 830
1214 1221 1611 1613
1621 2221 2238
Salvador Radio PPA 404 409 416 819 821
Santarem Radio PPT 404 409 819 821 824
page 73
Country Station Name Call ITU Channel
BRAZIL Santos Radio PPS 404 409 416 819 821
CONTD 824 1219
S Luis Radio PPB 404 409 819 821 824
Vitoria Radio PPV 404 409 416 819 821
CANADA Cambridge Bay VFC 403
Coast Guard Radio
Coppermine VFU 403
Coast Gaurd Radio
Coral Harbor Coast VFU 407
Guard Radio
Frobisher Bay VFF 407 603 812 1201
Coast Guard Radio 1634
Goose Bay VFZ 408
Coast Guard Radio
Halifax VCS 413 418 605 823 1213
Coast Guard Radio 1604
Inuvik VFA 403
Coast Guard Radio
Killinek VAW 407
Coast Gaurd Radio
Resolute VFR 407 825
Coast Guard Radio
Vancouver VAI 410 605 807 1207
Coast Guard Radio 1608 2220
Vancouver Radio CFW 418
BC Tel
CAPE Praia de Dabo Verde D4D 418 820 1218 1623
S Vicente de Cabo D4A 418 820 1218 1623
Verde Radio
CHILE Valparaiso Playa Ancha CBV 419 421 425 601 606
Radiomaritima 807 809 815 821 1210
1218 1221 1224 1621
1631 1640 2221 2225
page 74
MARITIME PUBLIC Station Name Call ITU Channel
COLOMBIA Barranquilla Radio HKB 406 826 1203 1615
Buenaventura Radio HKC 406 826 1203 1615
COOK Rarotonga Radio ZKR 821 825
CUBA Havana Radio CLA 401 418
Sntiago de Cuba Radio CLM 418 809 1217 1626
CYPRUS Cyprus Radio 5BA 406 141 421 426 603
606 807 818 820 821
829 1201 1208 1221
1230 1603 1621 1632
2212 2218 2221
DENMARK Lyngby Radio OXZ 401 403 409 415 418
420 421 424 425 426
603 605 606 801 808
811 813 818 821 823
825 827 829 1203
1210 1211 1214 1215
1217 1219 1221 1223
1226 1601 1603 1605
1608 1614 1617 1618
1621 1622 1635 1641
2203 2208 2211 2213
2216 2218 2228 2234
Djibouti Radio J2A 418 827 1210
EGYPT Alexandria Radio SUH 418 605 817 1216
1610 Assab Radio ETC 403 605 805
FIJI Suva Radio 3DP 406 810
page 75
Country Station Name Call ITU Channel
COLOMBIA Barranquilla Radio HKB 406 826 1203 1615
Buenaventura Radio HKC 406 826 1203 1615
COOK Rarotonga Radio ZKR 821 825
CUBA Havana Radio CLA 401 418
Sntiago de Cuba Radio CLM 418 809 1217 1626
CYPRUS Cyprus Radio 5BA 406 141 421 426 603
606 807 818 820 821
829 1201 1208 1221
1230 1603 1621 1632
2212 2218 2221
DENMARK Lyngby Radio OXZ 401 403 409 415 418
420 421 424 425 426
603 605 606 801 808
811 813 818 821 823
825 827 829 1203
1210 1211 1214 1215
1217 1219 1221 1223
1226 1601 1603 1605
1608 1614 1617 1618
1621 1622 1635 1641
2203 2208 2211 2213
2216 2218 2228 2234
DJIBOUTI Djibouti Radio J2A 418 827 1210
EGYPT Alexandria Radio SUH 418 605 817 1216
1610 2226
ETHIOPIA Assab Radio ETC 403 605 805
FIJI Suva Radio 3DP 406 810
page 76
Country Station Name Call ITU Channel
FRANCE S Lys Radio FFL 404 405 416 419 817
825 828 830 1222
1226 1229 1231 1604
1619 1628 1633 2204
2226 2231 2235
FRENCH S Paul et Amsterdam FJY 411 825
FINLAND Hanko Radio OFI 406 413 141 417 422
Helsinki Radio OHG 406 413 414 417 422
802 804 805 809 829
1206 1209 1213 1216
1224 1227 1230 1606
1611 1614 1615 1623
1636 1638 2204 2210
2214 2222 2231
GAMBIA Banjul Radio C5G 405 829
GERMANY Norddeich Radio DAP 401 824 1205 1610
Ruegen Radio Y5P 405 407 410 419 802
809 826 831 1202
1204 1206 1232 1619
1629 1633 1640 2220
2224 2226 2230
GHANA Takoradi Radio 9GA 402 601 823 1202
1616 2213
Tema Radio 9GX 409 602 825 1224
1622 Gilbraltar Naval Radio GYU 401 404 602 807 1212
1611 2212
page 77
Country Station Name Call ITU Channel
GREECE Athinai Radio SVN 413 415 424 425 603
802 806 808 809 814
819 820 823 1204
1207 1212 1220 1232
1607 1609 1625 1626
1627 1629 1640 2217
2219 2224 2231 2235
GUINEA Bissau Radio J5M 413 426 802 813 1203
BISSAU 1615 1635
HONG Cap DAguilar Radio 411 417 606
KONG Hong Kong Radio
ICELAND Hornafjoerdur Radio TFT 406 414 416 419
Reykjavik Radio TFA 406 414 416 419 601
603 805 807 809 831
1206 1208 1215 1220
1606 1615 1625 1630
2225 2226
Siglufjoerdur Radio TFX 406 414 416 419
INDONESIA Amboina Radio PKE 408 826 1210
Banjarmasin Radio PKG 411 602 816
Belawan Radio PKB 810 1205
Bitung Radio PKM 418 830 1209
Dumia Radio PKP 401 816 1209
Jakarta Radio PKI 812 1210 1610 2234
Kupang Radio PKK 604
Makassar Radio PKF 414 828 1201
Palembang Radio PKC 414 830
Sabang Radio PKA 411 826
Semarang Radio PKR 422 604 828
Sorong Radio PKY 422 601 828
Surabaya Radio PKD 408 826 1212
Telukbayur Radio PKP 605
IRAN Abadan Radio EQA 407 604 1605
Abbas Radio EQI 416 604 805 1616
page 78
MARITIME PUBLIC Station Name Call ITU Channel
IRAN Bushire Radio EQM 405 604 810 2203
Khark Radio EQQ 410 604 1220
Khoramshahr Radio EQK 408 604 824 1625
Lavan Radio EQR 420 604
Nowshahr Radio EQO 411 604 817
Shahpoor Radio EQN 402 604 829 1231
ISRAEL Haifa Radio 4XO 404 410 418 423 603
604 801 805 812 821
827 1204 1207 1213
1215 1221 1609 1613
1617 1628 2204 2207
ITALY Genova PT Radio ICB 408 409 806 823 1205
1211 1608 1614 2216
Roma PT Radio IAR 402 412 420 423 602
604 814 819 820 826
831 1206 1209 1213
1218 1230 1603 1606
1616 1624 2202 2211
2223 2237
IVORY Abidjan Reche Radio 404 602 806 1212
COAST Abidjan Radio TUA 419 603 822 1205
1634 2225
JAMAICA Kingston Jamaica Radio 6YI 405 416 605 812 1224
JAPAN Tokyo Radio JBO 407 425 426 810 812
820 1207 1212 1218
1604 1609 1632 2227
2236 2240
KENYA Mombasa Radio 5ZF 414 822
page 79
Country Station Name Call ITU Channel
KIRIBATI Tarawa Radio T3T 411 814
Republic of
KOREA Seoul Radio HLS 401 419 602 605 803
827 1213 1229 1634
1637 2209 2222
LEBANON Beyrouth Radio ODR 426 828 1216
MADAGASCAR Antalaha Radio 402
DiegoSuarez Radio 5RL 415
FortDauphin Radio 5RD 406
Maintirano Radio 415
Majunga Radio 5RO 415
ManakaraSud Radio 402
Manajary Radio 415
Morondava Radio 406
NossiBe Radio 5RN 406
Tamatave Radio 5RS 406 604 605 807 831
1206 1225 1637 2240
MADEIRA Madeira Radio CUB 413 426 802 813 1203
1207 1615 1632 2207
MARTINIQUE Fort de France Radio FFP 404 424 825 828
French Dept of
MEXICO Acapulco XFA 403 408 421 603 604
Guerrero Radio 606 809 821 826 1209
1221 1222 1604 1614
1621 2221 2225 2234
Chetumai XFP 404 401 421 601 604
Quintana Roo Radio 606 817 821 829 1209
1221 1222 1604 1614
1621 2221 2225 2238
Ciudad del Carmen XFD 404 413 421 606 809
Campeche Radio 821 826 1209 1221
1222 1604 1614 1621
2221 2225 2234
page 80
MARITIME PUBLIC Station Name Call ITU Channel
MEXICO XFF 404 413 421 603 604
Contd Veracruz Radio 606 817 821 829 1221
1222 1225 1604 1614
1621 2221 2234 2238
Cozumel XFC 403 408 421 603 604
Quintana Roo Radio 606 809 821 826 1209
1221 1225 1604 1614
1621 2221 2225 2234
Ensendada XFE 403 413 421 603 604
Baja California Radio 606 809 821 826 1209
1221 1222 1604 1614
1621 2221 2225 2234
Guaymas Sonora Radio XFY 404 413 421 606 817
821 829 1209 1221
1225 1604 1614 1621
2221 2225 2238
La Pax Baja California XFK 404 413 421 603 604
Radio 606 817 821 829 1221
1222 1225 1604 1621
2221 2234 2238
Manzanillo XFM 404 413 421 601 603
Comima Radio 606 817 821 829 1209
1221 1222 1604 1614
1621 2221 2225 2234
Mazatlan XFL 403 408 601 604 606
Sinaloa Radio 809 821 826 1209
1221 1225 1604 1621
2221 2225 2238
Progreso XFN 404 413 421 601 603
Yucatan Radio 606 817 821 829 1221
1222 1225 1614 1617
1621 2221 2234 2238
Salina Cruz XFQ 404 413 421 601 604
Oaxaca Radio 606 817 821 829 1221
1222 1225 1604 1621
2221 2234 2238
page 81
Country Station Name Call ITU Channel
MEXICO Tampico XFS 404 413 421 601 604
Contd Tamaulipas Radio 606 817 821 829 1221
1222 1225 1604 1614
1621 2221 2225 2238
Veracruz XFU 404 413 421 601 604
Veracruz Radio 606 817 821 829 1209
1221 1222 1604 1621
2221 2234 2238
MONACO Monaco Radio 3AC 403 413 421 602 804
809 821 1221 1224
1607 1621 2219 2221
MOROCCO Casablanca Radio CNP 828 1223 1638
NAURU Nauru Radio C2N 817
NETHERLANDS Curacao Radio PJC 408 803 1207 1607
NETHERLANDS Scheveningen Radio PCG 405 407 410 419 421
602 606 805 806 821
826 1207 1213 1219
1221 1621 1621 1623
1636 1639 2205 2221
NEW Noumea Radio RJP 404 805 1205
NEW Awarua Radio ZLB 421
ZEALAND Wellington Radio ZLW 408 421 601 807 1209
1606 2213
NORWAY Rogaland Radio LGN 401 403 407 409 415
418 420 421 424 425
426 603 605 606
page 82
Country Station Name Call ITU Channel
NORWAY LFL 801 803 808 809 810
Contd 811 813 818 821 823
825 827 828 829 1203
1204 1205 1210 1211
1213 1214 1217 1218
1219 1221 1222 1223
1225 1226 1228 1231
LFN 1601 1603 1604 1605
1607 1608 1610 1613
1614 1617 1618 1619
1620 1621 1622 1627
1629 1635 1641 2202
2203 2208 2211 2213
2215 2216 2218 2221
2228 2230 2233 2234
2236 2237 2239 2240
PAPUA NEW Port Moresby Radio P2M 409 417 604 805
GUINEA Rabaul Radio P2R 409 417 604 805 Bacoor Radio DZI 409 605 817 1220
Bulacan Radio DZJ 418 603 814 1201 1605
409 605 820 1220
Bulacan Radio DZO 1605 825
Cebu Radio DYP 412 820
Iloilo Radio DYV 418 603 808 1201
Manila Radio DZZ 1605
POLAND Gdynia Radio SPF 402 804 1209 1633
SPD 406 824 1229 1631
SPC 423 602 812 1216
1607 2215
SPG 806 1231 2209
Szczecin Radio SPR 404 830 1227 1638
SPO 408 604 810 1220
1625 2219
page 83
Country Station Name Call ITU Channel
FRENCH Mahina Radio FJA 416 829 1605
PORTUGAL Lisboa Radio CUL 413 602 802 1203
1615 1632 2207 2222
POLAND Gdynia Radio SPF 402 804 1209 1633
SPD 406 824 1229 1631
SPC 423 602 812 1216
1607 2215
SPG 806 1231 2209
Szczecin Radio SPR 404 830 1227 1638
SPO 408 604 810 1220
1625 2219
PUERTO RICO QPPA Radio A7S 423 804 1229 1626
REUNION S Denis Reunion FFD 404 418 819 824
French Dept of
SAMOA Pago Pago Radio KUQ 408 806 1232 1638
SAMOA Apia Radio 5WA 603 820 1213 1624
Western 2219
SAUDI Dammam Radio HZG 406 409 421 601 603
ARABIA 606 808 811 821 1202
1221 1223 1602 1609
1621 2221 2222 2231
SENEGAL Dakar Radio 6VA 404 803 1212 1629
SEYCHELLES Seychelles Radio S7Q 410 818 1215 1601
Republic of
S HELENA S Helena Radio ZHH 414 807 1217
page 84
Country Station Name Call ITU Channel
SINGAPORE Singapore Radio 9VG 405 407 602 606 804
815 821 824 1216
1219 1221 1613 1621
1641 2212 2221
SOLOMON Honiara Radio VQJ 830
SOUTH Cape Town Radio ZSC 405 421 821 1209
AFRICA 1608 2204
Durban Radio ZSD 407 421 602 808 821
1221 1224 1633 2206
SPAIN Pozuelo del Rey Radio EHY 406 407 409 411 416
601 604 803 804 810
816 818 1201 1208
1210 1225 1227 1620
1630 1634 1637 1639
2201 2224 2226 2229
SWEDEN Goteborg Radio SAG 401 403 409 418 420
SAB 424 603 605 801 803
808 811 818 825 827
829 1203 1210 1211
1214 1215 1217 1219
1223 1226 1601 1603
1605 1608 1614 1617
1618 1622 1635 1641
2203 2208 2211 2213
2218 2228 2230 2234
Harnosand Radio SAH 401 420 Bern Radio HEB 408 424 822 824 831
1202 1227 1230 1611
1615 1631 2214 2220
TOGO Lome Radio 5VA 403
page 85
Country Station Name Call ITU Channel
TURKEY Antalya Radio TAM 409 1620
Canakkale Radio TAM 407 810 1226
Iskenderun Radio TAM 420
Istanbul Radio TAN 417 811 831 1218
1608 2230
Izmir Radio TAN 401 602 1618
Mersin Radio TAM 803 1206 1216 1611
2213 2214
Samsun Radio TAN 420 1606
Trabzon Radio TAO 401 602
Zonguldak Radio TAN 411 1222
TUVALU Funafuti Island Radio 814 1207 1608
UNITED Portishead Radio GKT 402 406 410 802 1201
KINGDOM 1202 1206 1602 1606
GKV 426 822 826 1224
1228 1230 1623 2227
GKU 816 819 1611 1615
1618 2212 2220
GKW 831 1232 1632 1637
RUSSIA Arkhangelsk Radio 401 823 1209 1626
Astrakhan Radio 405 804
Baku Radio 405 807
Jdanov Donetskoi Radio 413 1641
Kholmsk Radio 1626 2213
Klaipeda Radio 405 1205 1601
Leningrad Radio 414 807 1204 1605
Moskva Radio 1201 1606 2207
Murmansk Radio 402 824
Nakhodka 1613
Primorskogo Radio
Novorossiisk 405 815 1209 1601
Radio 2231
page 86
Country Station Name Call ITU Channel
RUSSIA Odessa Radio 1205 1623 2202 2218
Contd Riga Radio 401 1205 1630
Vladivostok Radio 401 603 805 1201
1607 2202
UNITED Mobile Alambama Radio WLO 405 414 419 607
STATES 824 829 830 1212
1225 1226 1607 1632
Point Reyes California KMI 1641 2227 2231 2237
Radio 401 416 417 804 809
822 1201 1202 1203
1229 1602 1603 1624
Ft Lauderdale Florida WOM 2214 2223 2228 2236
Radio 403 412 417 423 802
805 810 814 825 831
1206 1208 1209 1215
1223 1230 1601 1609
1610 1611 1616 2215
Manahawkin New Jersey WOO 2216 2222
Radio 410 411 416 422 808
811 815 826 1203
1210 1211 1228 1605
1620 1626 1631 2201
2205 2210 2236
Rijeka Radio YUR 408 419 602 605 810
830 1224 1229 1611
1627 2204 2206 2239
Limited services after page 87
Coast Ship Coast Ship Coast Ship
Channel Channel Channel
Tranmit Transmit Tranmit Transmit Tranmit Transmit
No No No
kHz kHz kHz kHz kHz kHz
401 4065 4357 812 8228 8752 1230 12317 13164
402 4068 4360 813 8231 8755 1231 12320 13167
403 4071 4363 814 8234 8758 1232 12323 13170
404 4074 4366 815 8237 8761 1250 12290 Safety
405 4077 4369 816 8240 8765 1251 12353 Simplex
406 4080 4372 817 8243 8767 1252 12356 Simplex
407 4083 4375 818 8246 8770 1253 12359 Simplex
408 4086 4378 819 8249 8773 1601 16360 17242
409 4089 4381 820 8252 8776 1602 16363 17245
410 4092 4384 821 8255 8779 1603 16366 17248
411 4095 4387 822 8258 8782 1604 16369 17251
412 4098 4390 823 8261 8785 1605 16372 17254
413 4101 4393 824 8264 8788 1606 16375 17257
414 4104 4396 825 8267 8791 1607 16378 17260
415 4107 4399 826 8270 8794 1608 16381 17263
416 4110 4402 827 8273 8797 1609 16384 17266
417 4113 4405 828 8276 8800 1610 16387 17269
418 4116 4408 829 8279 8803 1611 16390 17272
419 4119 4411 830 8282 8806 1612 16393 17275
420 4122 4414 831 8285 8809 1613 16396 17278
421 4125 4417 832 8288 8812 1614 16399 17281
422 4128 4420 850 8291 Safety 1615 16402 17284
423 4131 4423 851 8294 Simplex 1616 16405 17287
424 4134 4426 852 8297 Simplex 1617 16408 17290
425 4137 4429 1201 12230 13077 1618 16411 17293
426 4140 4432 1202 12233 13080 1619 16414 17296
427 4143 4435 1203 12236 13083 1620 16417 17299
450 4125 Safety 1204 12239 13086 1621 16420 17302
451 4146 Simplex 1205 12242 13089 1622 16423 17305
452 4149 Simplex 1206 12245 13092 1623 16426 17308
453 4417 Simplex 1207 12248 13095 1624 16429 17311
601 6200 6501 1208 12251 13098 1625 16432 17314
602 6203 6504 1209 12254 13101 1626 16435 17317
603 6206 6507 1210 12257 13104 1627 16436 17320
604 6209 6510 1211 12260 13107 1628 16441 17323
605 3212 6513 1212 12263 13110 1629 16444 17326
606 6215 6516 1213 12266 13113 1630 16447 17329
650 6215 Safety 1214 12269 13116 1631 16450 17332
651 6224 Simplex 1215 12272 13119 1632 16453 17335
652 6227 Simplex 1216 12275 13122 1633 16456 17338
653 6230 Simplex 1217 12278 13125 1634 16459 17341
654 6516 Simplex 1218 12281 13128 1635 16462 17344
801 8195 8719 1219 12284 13131 1636 16465 17347
802 8198 8722 1220 12287 13134 1637 16468 17350
803 8201 8725 1221 12290 13137 1638 16471 17353
804 8204 8728 1222 12293 13140 1639 16474 17356
805 8207 8731 1223 12296 13143 1640 16477 17359
806 8210 8734 1224 12299 13146 1641 16480 88
Coast Ship Coast Ship Coast Ship
Channel Channel Channel
Tranmit Transmit Tranmit Transmit Tranmit Transmit
No No No
kHz kHz kHz kHz kHz kHz
807 8213 9737 1225 12302 13149 1650 16520 Safety
808 8216 8740 1226 12305 13152 1651 16528 Simplex
809 8219 8743 1227 12308 13155 1652 16531 Simplex
810 8222 8746 1228 12311 13158
811 8225 8749 1229 12314 13161
1801 19755 18780 2209 22024 22720 2232 22093 22789
1802 19758 18783 2210 22027 22723 2233 22096 22792
1803 19761 18786 2211 22030 22726 2234 22099 22795
1804 19764 18789 2212 22033 22729 2235 22102 22798
1805 19767 18792 2213 22036 22732 2236 22105 22801
1806 19770 18795 2214 22039 22735 2237 22108 22804
1807 19773 18798 2215 22042 22738 2238 22111 22807
1808 19776 18801 2216 22045 22741 2239 22114 22810
1809 19779 18804 2217 22048 22744 2240 22117 22813
1810 19782 18807 2218 22051 22747 2251 22159 Simplex
1811 19785 18810 2219 22054 22750 2252 22162 Simplex
1812 19788 18813 2220 22057 22753 2253 22165 Simplex
1813 19791 18816 2221 22060 22756 2254 22168 Simplex
1814 19794 18319 2222 22063 22759 2255 22171 Simplex
1815 19797 18822 2223 22066 22762 2501 26145 25070
2201 22000 22696 2224 22069 22765 2502 26148 25073
2202 22003 22699 2225 22072 22768 2503 26151 25076
2203 22006 22702 2226 22075 22771 2504 26154 25079
2204 22009 22705 2227 22078 22774 2505 26157 25082
2205 22012 22708 2228 22081 22777 2506 26160 25085
2206 22015 22711 2229 22084 22780 2507 26163 25088
2207 22018 22714 2230 22087 22793 2508 26166 25091
2208 22021 22717 2231 22090 22786
page 89
Shiptoship and shiptocoast shore station SSB marine channels along
with their channel designators Safety channels are identified with a designator S
Regualr shiptoship channels are designated A through E
Frequency Chnl Designator ONLY
2182 Marine international distress calling
Coast Gaurd shortrange
4125 4S shortrange safety
6215 6S shortrange safety
8291 8S mediumrange safety
12290 12S longrange safety
16420 16S very longrange SHIPTOSHIP CHANNELS
2065 nights shortrange
2079 nights shortrange
20965 nights shortrange
3023 search and rescue
4146 4A shortrange
4149 4B shortrange
4417 4C daytime shortrange
6224 6A mediumrange
6227 6B mediumrange
6230 6C mediumrange
8294 8A longrange
8297 8B longrange
12353 12A longrange
12356 12B longrange
16528 16A very longrange days
16531 16B longrange
16534 16C very longrange
18840 18A quiet channel longrange
18843 18B quiet channel very longrange
22159 22A extremely longrange
22162 22B extremely longrange
22165 22C extremely longrange
22168 22D extremely 90
Country Call Signs Frequencies Times
CAIRO EGYPT SUU29 11015 kHz 19000700
SUU33 15664 kHz
SUU45 17635 kHz 07001900
NAIROBI KENYA 5YE1 9043 kHz Continuous
5YE2 12315 kHz Continuous
5YE8 15525 kHz Continuous
5YE6 16315 kHz Continuous
5YE3 17365 kHz Continuous
5YE7 15525 kHz Continuous
SAINT DENIS FZR81 8176 kHz 24 FZS63 16335 kHz 24 hrs
DAKAR SENEGAL 6VU73 136675 kHz Continuous
6VU79 19750 kHz Continuous
PRETORIA ZRO5 4014 kHz 15300400
SOUTH AFRICA ZRO2 7508 kHz Continuous
ZRO3 13538 kHz Continuous
ZRO4 18238 kHz Continuous
CHINA BAF36 8120 kHz
BAF4 10115 kHz
BAF8 14365 kHz
BAF9 16025 kHz
BAF33 18235 kHz
5100 kHz
7420 kHz
11420 kHz
18940 kHz
NEW DELHI INDIA ATA55 49935 kHz 14300230
ATP57 7403 kHz Continuous
ATV65 14842 kHz Continuous
ATU38 18227 kHz page 91
Country Call Signs Frequencies Times
TOKYO 1 JAPAN JMH 36225 kHz Continuous
JMH2 7305 kHz Continuous
JMH3 9970 kHz Continuous
JMH4 13597 kHz Continuous
JMH5 18220 kHz Continuous
JMH6 235229 kHz Continuous
TOKYO 2 JAPAN JMJ 3365 kHz Continuous
JMJ2 5405 kHz Continuous
JMJ3 9438 kHz Continuous
JMJ4 146925 kHz Continuous
JMJ5 184412 kHz Continuous
8140 kHz
13900 kHz
SEOUL HLL8 58575 kHz Continuous
BANGKOK HSW64 7395 kHz
THAILAND HSW61 17520 kHz
KHABAROVSK RXB72 45167 kHz Continuous
RUSSIA RXB75 7475 kHz Continuous
RXO70 9230 kHz Continuous
RXO72 14737 kHz Continuous
RXO74 19275 kHz Continuous
NOVOSIBIRSK 1 ROF73 4445 kHz Continuous
RUSSIA RYO79 5765 kHz Continuous
RTB26 9220 kHz Continuous
RYO76 12320 kHz Continuous
NOVOSIBIRSK 2 3675 kHz Continuous
RUSSIA 4475 kHz 14250245
RCU73 9060 kHz Continuous
RCU79 12230 kHz 03501325
Country Call Signs Frequencies Times
TOKYO 1 JAPAN JMH 36225 kHz Continuous
JMH2 7305 kHz Continuous
JMH3 9970 kHz Continuous
JMH4 13597 kHz Continuous
JMH5 18220 kHz Continuous
JMH6 235229 kHz Continuous
TASHKENT 1 RBV70 3690 kHz 13000130
UZBEKISTAN RPJ78 4365 kHz Continuous
RBV78 5890 kHz Continuous
RBX72 7570 kHz 01301300
RCH72 9340 kHz Continuous
RBV76 149825 kHz Continuous
TASHKENT 2 RBX70 3280 kHz Continuous
UZBEKISTAN 5090 kHz Continuous
RBX71 5285 kHz Continuous
RCH73 9150 kHz Continuous
BEUNOS AIRES LRO69 5185 kHz Continuous
ARGENTINA LRB72 10720 kHz Continuous
LRO84 18053 kHz Continuous
OLINDA PPO 8294 kHz 07451745
RIO DE JANEIRO PWZ33 12660 kHz 07451745
BRAZIL PWZ33 17140 kHz 07451745
SANTIAGO CHILE CCS 4766 kHz Continuous
6418 kHz Night
8594 kHz Continuous
13525 kHz Day
22071 kHz Continuous
NORTH BRITISH CKN 27521 kHz CANADA 42661 kHz Continuous
64541 kHz Continuous
127511 kHz page 93
Country Call Signs Frequencies Times
HALIFAX NOVA CFN 1225 kHz Continuous
SCOTIA CANADA 4271 kHz Continuous
64964 kHz Continuous
10536 kHz Continuous
13510 kHz Continuous
IQALUIT NWT VFF 32511 kHz 1 July 15 Oct
CANADA VFF 77081 kHz 1 July 15 Oct
RESOLUTE NWT VFR 32511 kHz 1 July 15 Oct
CANADA VFR 77081 kHz 1 July 15 Oct
NEW ORLEANS NMG 85039 kHz Various
LOUISIANA 43179 kHz Various
ALASKA USA 3394 kHz 12002400
5095 kHz 00001200
7398 kHz 12002400
10665 kHz 00001200
15805 kHz
19332 kHz
USA 8459 kHz
12730 kHz
171512 kHz
22528 kHz
BOSTON NIK 63405 kHz 1600 1840
12750 kHz 1600 1840
MARSHFIELD NMF 63405 kHz 1600 1840
12750 kHz 1600 1840
ROGERS CITY WLC 21955 kHz 013004302
MICHIGAN USA 58986 kHz 94
Country Call Signs Frequencies Times
OFFUTT 3231 kHz
AFBELKHORN 5096 kHz 00001200
NEBRASKA USA 6904 kHz 00001200
10576 kHz 12002400
11120 kHz 12002400
15681 kHz
19325 kHz
NORFOLK VIRGINIA NAM 3357 kHz 00001200
USA 38205 kHz On Call
NAM 8080 kHz On Call
9318 kHz Continuous
91081 kHz
127481 kHz
NAM 10865 kHz 12000000
NAM 15959 kHz On Call
18486 kHz On Call
NAM 20015 kHz On Call
DARWIN AUSTRALIA AXI32 5755 kHz 11102300
AXI33 7535 kHz 11102300
AXI34 10555 kHz 00002359
AXI35 15615 kHz 23001110
AXI37 18060 kHz 23001110
MELBOURNE AXM31 2628 kHz Continuous
AUSTRALIA AXM32 5100 kHz Continuous
AXM34 11030 kHz Continuous
AXM35 13920 kHz Continuous
AXM37 20469 kHz NEW ZKLF 5807 kHz Continuous
ZEALAND 9459 kHz Continuous
13550 kHz Continuous
163401 kHz page 95
Country Call Signs Frequencies Times
QUAM 1 MI NPN 49657 kHz 00002359
10255 kHz 00002359
12777 kHz 00002359
160296 kHz 00002359
19860 kHz 00002359
223245 kHz 00002359
Japan freq
Guam freq
QUAM 2 MI NPN 5260 kHz 00002359
NKM 7580 kHz 14000159
NKM 12804 kHz 00002359
NKM 20300 kHz 02001359
NPN 23010 kHz 00002359
Diego Garcia freq
Guam freq
QUAM 3 4943 kHz
77085 kHz
13385 kHz
14397 kHz
17526 kHz
20380 kHz
HONOLULU KVM70 99825 kHz Continuous
HAWAII USA 11090 kHz Continuous
16135 kHz Continuous
233315 kHz 96
Country Call Signs Frequencies Times
PEARL HARBOR NPM 4855 kHz 06001600
6453 kHz Continuous
8494 kHz Continuous
9090 kHz Continuous
21735 kHz 16000600
Pearl Harbor freq
ADAK AK freq
Stockton CA
PRAGUE CZECH OLT21 1118 kHz Continuous
SKAMLEBAEK OXT1 5850 kHz 00301005
DENMARK 9360 kHz 00050025
13855 kHz 12201240
17510 kHz FINLAND OGH 2803 kHz 0840
OGH 28117 kHz 0840
OFB28 8018 kHz 0840
MARIEHAMM OFH 18777 kHz 0840 0990
HAMBURG DDH3 3855 kHz 06002300
PINNEBERG DDK3 7880 kHz Continuous
GERMANY DDK6 138825 kHz page 97
Country Call Signs Frequencies Times
OFFENBACH DCF54 1342 kHz Continuous
OFFENBACH DCF37 1174 kHz Continuous
ROME ITALY IMB51 47775 kHz Continuous
IMB55 81466 kHz Continuous
IMB56 135974 kHz Continuous
ECA7 69185 kHz
10250 kHz
ROTO SPAIN AOK 4623 kHz 18000600
58564 kHz Continuous
93825 kHz Continuous
11485 kHz 06001800
ANKARA TURKEY YMA20 3377 kHz 16100500
YMA20 6790 kHz 05001610
MOSCOW RUSSIA RVO76 2815 kHz 15300510
RCI72 3875 kHz 17100510
RND77 5355 kHz Continuous
RAW78 7750 kHz Continuous
RKA73 10710 kHz Continuous
RDD79 10980 kHz Continuous
RBI77 15950 kHz 15101710
RIZ59 18710 kHz Unknown
MOSCOW 2 RUSSIA RTO 536 kHz Continuous
RVO73 5150 kHz Continuous
RAN77 6880 kHz Continuous
RCC76 7670 kHz Continuous
RKA78 10230 kHz Continuous
RWZ77 11525 kHz 02301805
RKU71 13470 kHz 98
Country Call Signs Frequencies Times
RKB78 12165 kHz
MURMANSK RUSSIA RBW48 10130 kHz 06001900
ST PETERSBURG 7480 kHz 19002200
RUSSIA 13780 kHz 19002200
BRACKNELL GFA 26185 kHz KINGDOM GFA 4610 kHz Continuous
GFA 8040 kHz Continuous
GFA 14436 kHz Continuous
GFA 18261 kHz 06001800
5932 kHz
6827 kHz
6937 kHz
7596 kHz
7623 kHz
7930 kHz
9100 kHz
10385 kHz
10873 kHz
13537 kHz
13585 kHz
14397 kHz
14677 kHz
17526 kHz
20051 kHz
20095 kHz
23155 kHz
23195 kHz
25245 kHz
25480 kHz
page 99
Country Call Signs Frequencies Times
NORTHWOOD GYA 2374 kHz Continuous
UNITED KINGDOM GYA 3652 kHz Continuous
GYA 4307 kHz Continuous
GYA 6446 kHz Continuous
GYA 83315 kHz Continuous
GYA 1284456 kHz Continuous
GYA 16912 kHz Continuous
CASEY ANTARCTICA VLM 74681 kHz 12000300
VLM 114531 kHz 100

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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.