Icom IC-M25 User manual

INSTRUCTION MANUAL
iM25EURO
iM25
VHF MARINE TRANSCEIVER
This device complies with Part 15 of the FCC
Rules. Operation is subject to the condition that
this device does not cause harmful interference.

ii
FOREWORD
Thank you for purchasing this Icom radio. The IC-M25/IC-
M25EURO VHF
MARINE TRANSCEIVER is designed and built
with Icom’s state of the art technology and craftsmanship.
With proper care this radio should provide you with years of
trouble-free operation.
IMPORTANT
READ ALL INSTRUCTIONS carefully and com-
pletely before using the transceiver.
SAVE THIS INSTRUCTION MANUAL—This
instruction manual contains important operating instructions
for the IC-M25/IC-M25EURO.
EXPLICIT DEFINITIONS
WORD DEFINITION
RDANGER! Personal death, serious injury or an explo-
sion may occur.
RWARNING! Personal injury, fire hazard or electric
shock may occur.
CAUTION Equipment damage may occur.
NOTE
If disregarded, only inconvenience. No risk
of personal injury, fire or electric shock.
FEATURES
Floats on water
The transceiver floats in fresh or salt
water even when the supplied acces-
sories are attached.
 s)TMAYSINKWHENATHIRDPARTYSTRAPAN-
tenna, and so on is attached.
Floats and flashes
An LED sends out intermittent light from
a transparent section on the bottom of
the radio, while floating in the water.
As the LED light stands out in the dark, the
radio can be easily retrieved from the water.
This function works even when the radio is
turned OFF.
Floats and flashes and alert
An alert sounds when the radio is dropped into the water
so that you can noticed that you dropped the radio.
For Canada:
This device complies with RSS-310 of Industry Canada. Operation is subject
to the condition that this device does not cause harmful interference.
Cet appareil est conforme au CNR-310 d’Industrie Canada. Son exploitation
est autorisée sous réserve que l’appareil ne cause pas de brouillage
préjudiciable.

ii
IN CASE OF EMERGENCY RECOMMENDATION
If your vessel requires assistance, contact other vessels and
the Coast Guard by sending a distress call on Channel 16.
MUSING CHANNEL 16
DISTRESS CALL PROCEDURE
1. “MAYDAY MAYDAY MAYDAY.”
2. “THIS IS ……………… ” (name of vessel)
3.Your call sign or other indication of the ves-
sel.
4. “LOCATED AT …………… ” (your position)
5. The nature of the distress and assistance
required.
6. Any other information which might facilitate
the rescue.
CLEAN THE TRANSCEIVER THOROUGHLY WITH FRESH
WATER after exposure to saltwater, and dry it before operat-
ing. Otherwise, the transceiver's keys, switches and control-
lers may become unusable due to salt crystallization.
NOTE: DO NOT submerge the transceiver in water if there is
any reason to suspect the waterproof protection may not be
effective. For example, in cases where the [SP/MIC] jack cap
or [DC] connector cover seal is damaged, the transceiver/
[DC] connector cover is cracked or broken, or the transceiver
has been dropped, or when the antenna or DC connector
cover is detached from the transceiver.

iii
RADIO OPERATOR WARNING
Your Icom radio generates RF electromagnetic energy dur-
ing transmit mode. This radio is designed for and classified as
“General Population Use” in an uncontrolled environment.
This radio has been evaluated for compliance at the distance
of 2.5 cm (1 inch) with the FCC and IC RF exposure limits for
“
General Population Use. ” In addition, your Icom radio complies
with the following Standards and Guidelines with regard to RF
energy and electromagnetic energy levels and evaluation of
such levels for exposure to humans:
 s&##/%4 "ULLETIN%DITION3UPPLEMENT#%VALUATING#OMPLI-
ance with FCC Guidelines for Human Exposure to Radio Frequency
Electromagnetic Fields.
 s!MERICAN.ATIONAL3TANDARDS)NSTITUTE#)%%%3TANDARD
for Safety Levels with Respect to Human Exposure to Radio Frequency
Electromagnetic Fields, 3 kHz to 300 GHz.
 s!MERICAN.ATIONAL3TANDARDS)NSTITUTE#)%%%2ECOM-
mended Practice for the Measurement of Potentially Hazardous Electro-
magnetic Fields– RF and Microwave.
s4 HEFOLLOWINGACCESSORIESAREAUTHORIZEDFORUSEWITHTHISPRODUCT5SEOF
accessories other than those specified may result in RF exposure levels
exceeding the FCC
and IC REQUIREMENTSFORWIRELESS2&EXPOSURE"ELT
#LIP-"2ECHARGEABLE,IION"ATTERY0ACK"0
To ensure that your expose to RF electromagnetic energy
is within the FCC
and IC allowable limits for general popu-
lation use, always adhere to the following guidelines:
 sDO NOT operate the radio without a proper antenna attached, as this
may damaged the radio and may also cause you to exceed FCC
and
IC
RF exposure limits. A proper antenna is the antenna supplied with
this radio by the manufacturer or antenna specifically authorized by the
manufacturer for use with this radio.
 sDO NOT transmit for more than 50% of total radio use time (“50% duty
cycle”). Transmitting more than 50% of the time can cause FCC
and IC
RF exposure compliance requirements to be exceeded. The radio is
transmitting when the “transmit indicator” appears on the LCD. You can
cause the radio to transmit by pressing the “PTT” switch.
 sALWAYS keep the antenna at least 2.5 cm (1 inch) away from the body
when transmitting and only use the Icom belt clip which is listed on page
43 when attaching the radio to your belt, etc., to ensure FCC
and IC RF
exposure compliance requirements are not exceeded. To provide the re-
cipients of your transmission the best sound quality, hold the antenna at
least 5 cm (2 inches) from your mouth, and slightly off to one side.
The information listed above provides the user with the information needed
to make him or her aware of RF exposure, and what to do to assure that this
radio operates with the FCC
and IC RF exposure limits of this radio.
Electromagnetic Interference/Compatibility
During transmissions, your Icom radio generates RF energy that can possibly
cause interference with other devices or systems. To avoid such interference,
turn off the radio in areas where signs are posted to do so. DO NOT operate
the transmitter in areas that are sensitive to electromagnetic radiation such as
hospitals, aircraft, and blasting sites.

iv
AVERTISSEMENT POUR LES OPÉRATEURS RADIO
Votre radio Icom produit une énergie électromagnétique
de radiofréquences (RF), en mode de transmission. Elle
est conçue pour une «utilisation grand public», dans un
environnement non contrôlé. Cet appareil a été évalué et
jugé conforme, à 2,5 cm, aux limites d'exposition aux RF
de la FCC et d’IC, pour une «utilisation grand public». En
outre, votre radio Icom satisfait les normes et directives
qui suivent en matière de niveaux d'énergie et d'énergie
électromagnétique de RF et d'évaluation de tels niveaux
en ce qui concerne l'exposition humaine :
s3UPPL£MENT # £DITION  DU "ULLETIN /%4  DE LA &## i%VALUATING
Compliance with FCC Guidelines for Human Exposure to Radio Frequency
Electromagnetic Fields».
s.ORME DE L!MERICAN .ATIONAL 3TANDARDS )NSTITUTE !.3)  )%%% #
SURLESNIVEAUXDES£CURIT£COMPATIBLESAVECLEXPOSITIONHUMAINEAUX
champs électromagnétiques de radiofréquences (3 kHz à 300 GHz).
s.ORMEDEL!.3))%%%#SURLAM£THODED£VALUATIONRECOMMAN-
dée du champ magnétique potentiellement dangereux des radiofréquences
et des micro-ondes.
s,ES ACCESSOIRES QUI SUIVENT SONT APPROUV£S POUR UNE UTILISATION AVEC CE
produit. L'utilisation d'accessoires autres que ceux précisés peut entraîner
des niveaux d'exposition aux RF supérieures aux limites établies par la FCC
ETD)#ENMATIÞREDgEXPOSITIONAUX2&SANSlLATTACHEPOURCEINTURE-"
BLOCPILESRECHARGEABLEAULITHIUMION"0
CAUTION
Afin de vous assurer que votre exposition à une
énergie électromagnétique de RF se situe dans
les limites permises par la FCC et d’IC pour une
utilisation grand public, veuillez en tout temps
respecter les directives suivantes :
sNE PAS faire fonctionner la radio sans qu'une antenne appropriée y soit
fixée, car ceci risque d'endommager la radio et causer une exposition
supérieure aux limites établies par la FCC et d’IC. L'antenne appropriée
est celle qui est fournie avec cette radio par le fabricant ou une antenne
spécialement autorisée par le fabricant pour être utilisée avec cette radio.
sNE PAS émettre pendant plus de 50% du temps total d'utilisation de
l'appareil («50% du facteur d'utilisation»). Émettre pendant plus de 50% du
temps total d'utilisation peut causer une exposition aux RF supérieure aux
limites établies par la FCC et d’IC. La radio est en train d’émettre lorsque le
témoin du mode de transmission s'affiche sur l'écran ACL. La radio émettra
si vous appuyez sur le bouton du microphone.
sTOUJOURS tenir l'antenne éloignée d'au moins 2,5 cm de votre corps
au moment d'émettre et utiliser uniquement l'attache pour ceinture Icom
illustrée à la p. 43, lorsque vous attachez la radio à votre ceinture, ou à
autre chose, de façon à vous assurer de ne pas provoquer une exposition
aux RF supérieure aux limites fixées par la FCC et d’IC. Pour offrir à vos
interlocuteurs la meilleure qualité de transmission possible, tenez l'antenne
à au moins 5 cm de votre bouche et légèrement de côté.
Les renseignements ci-dessus fournissent à l'utilisateur toute l'information
nécessaire sur l'exposition aux RF et sur ce qu'il faut faire pour assurer que
cette radio fonctionne en respectant les limites d'exposition aux RF établies
par la FCC et d’IC.
Interférence électromagnétique et compatibilité
En mode de transmission, votre radio Icom produit de l'énergie de RF qui
peut provoquer des interférences avec d'autres appareils ou systèmes. Pour
éviter de telles interférences, mettez la radio hors tension dans les secteurs
où une signalisation l’exige. NE PAS faire fonctionner l'émetteur dans des
secteurs sensibles au rayonnement électromagnétique tels que les hôpitaux,
les aéronefs et les sites de dynamitage.
AVERTISSEMENT
MISE EN GARDE

v
RWARNING! NEVER connect the transceiver to an
AC outlet. This may pose a fire hazard or result in an electric
shock.
RWARNING! NEVER hold the transceiver so that
the antenna is closer than 2.5 cm (1 inch) from exposed
parts of the body, especially the face or eyes, while transmit-
ting. The transceiver will perform best if the microphone is
5 to 10 cm (2 to 4 inches) away from the lips and the trans-
ceiver is vertical.
CAUTION: NEVER connect the transceiver to a
power source more than 5 V DC (1 A). Such a connection
will ruin the transceiver.
DO NOT use or place the transceiver in direct sunlight
or in areas with temperatures below –20°C (–4°F) or above
+60°C (+140°F).
KEEP the transceiver out of the reach of children.
KEEP THETRANSCEIVERATLEASTMETERSFTAWAY
from your vessel’s magnetic navigation compass.
BE CAREFUL! The transceiver meets IPX7* require-
ments for waterproof protection. However, once the trans-
ceiver has been dropped, waterproof protection cannot be
guaranteed because of possible damage to the transceiver's
case or the waterproof seal.
*Only when the flexible antenna, [DC] cover and [SP/MIC] jack cap
are securely attached.
MAKE SURE the antenna is securely attached to the
transceiver, and that the antenna is dry before attachment.
Exposing the inside of the transceiver to water will result in
serious damage to the transceiver.
Icom, Icom Inc. and Icom logo are registered trademarks of Icom Incorporated
(Japan) in Japan, the United States, the United Kingdom, Germany, France,
Spain, Russia, Australia, New Zealand, and/or other countries.
PRECAUTIONS

vi
FOREWORD ..................................................................................... i
IMPORTANT...................................................................................... i
EXPLICIT DEFINITIONS................................................................... i
FEATURES........................................................................................ i
IN CASE OF EMERGENCY............................................................. ii
RECOMMENDATION ....................................................................... ii
SAFETY TRAINING INFORMATION............................................... iii
INFORMATION EN MATIÈRE DE SÉCURITÉ................................ iv
PRECAUTIONS................................................................................ v
4 !",%/&#/.4 %.4 3................................................................... vi
FCC INFORMATION ...................................................................... vii
1 OPERATING RULES ..................................................................1
2 SUPPLIED ACCESSORIES AND ATTACHMENTS............... 2–3
NSupplied accessories...............................................................2
NAttachments.............................................................................2
3 PANEL DESCRIPTION ........................................................... 4–7
NFront, top and side panels .......................................................4
NFunction display.......................................................................6
4 BASIC OPERATION ............................................................. 8–13
NChannel selection ....................................................................
NAdjusting the volume level .....................................................10
NAdjusting the squelch level ....................................................10
NReceiving and transmitting ....................................................11
NCall channel programming.....................................................12
NVolume Loud function ............................................................12
NVolume Mute function ............................................................12
NLock function..........................................................................13
NMonitor function .....................................................................13
NAutomatic backlighting...........................................................13
NAquaQuake Water Draining function......................................13
5 SCAN OPERATION ............................................................14–15
NScan types.............................................................................14
NSetting TAG channels ............................................................15
NStarting a scan.......................................................................15
6 DUALWATCH/TRI-WATCH .......................................................16
NDescription.............................................................................16
NOperation...............................................................................16
7 SET MODE..........................................................................17–20
NSet mode programming .........................................................17
NSet mode items......................................................................1
8 BATTERY CHARGING .......................................................21–25
N"ATTERYCAUTION.......................................................................21
NSupplied battery charger .......................................................23
NOptional battery charger ........................................................23
9 TROUBLESHOOTING ..............................................................26
10 VHF MARINE CHANNEL LIST.................................................27
11 SPECIFICATIONS AND OPTIONS...........................................28
NSpecifications.........................................................................2
NOptions ..................................................................................2
4 !",%/&#/.4 %.4 3

vii
FOR CLASS A UNINTENTIONAL RADIATORS
This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment
is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instruc-
tion manual, may cause harmful interference to radio commu-
nications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will
be required to correct the interference at his own expense.
CAUTION: Changes or modifications to this device, not ex-
pressly approved by Icom Inc., could void your authority to
operate this device under FCC regulations.
FCC INFORMATION

D Priorities
s2EADALLRULESANDREGULATIONSPERTAININGTOCALLPRIORITIES
and keep an up-to-date copy handy. Safety and distress
calls take priority over all others.
s9OUMUSTMONITOR#HANNELWHENYOUARENOTOPERATING
on another channel.
s&ALSEORFRAUDULENTDISTRESSCALLSAREPROHIBITEDUNDERLAW
D Privacy
s)NFORMATIONOVERHEARDBUTNOTINTENDEDFORYOUCANNOT
lawfully be used in any way.
s)NDECENTORPROFANELANGUAGEISPROHIBITED
D Radio licenses
(1) SHIP STATION LICENSE
You may require a current radio station license before using
the transceiver. It is unlawful to operate a ship station which
is not licensed, but required to be.
If required, contact your dealer or the appropriate govern-
ment agency for a Ship-Radiotelephone license application.
This government-issued license states the call sign which is
your craft’s identification for radio purposes.
(2) OPERATOR’S LICENSE
A Restricted Radiotelephone Operator Permit is the license
most often held by small vessel radio operators when a radio
is not required for safety purposes.
If required, the Restricted Radiotelephone Operator Permit
must be posted or kept with the operator. If required, only a
licensed radio operator may operate a transceiver.
However, non-licensed individuals may talk over a trans-
ceiver if a licensed operator starts, supervises, ends the call
and makes the necessary log entries.
A current copy of the applicable government rules and regu-
lations is only required to be on hand for vessels in which a
radio telephone is compulsory. However, even if you are not
required to have these on hand it is your responsibility to be
thoroughly acquainted with all pertinent rules and regula-
tions.
NOTE: Even though the IC-M25/IC-M25EURO is capable
of operation on VHF marine channels 3, 21, 23, 61, 64,
ANDACCORDINGTO&##REGULATIONSTHESESIM-
plex channels cannot be lawfully used by the general
population in USA waters.
1
1
OPERATING RULES
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

2
SUPPLIED ACCESSORIES ATTACHMENTS
2
NSupplied accessories
NAttachments
DAntenna
Connect the supplied antenna to the
antenna connector.
CAUTION:
sNEVER carry the transceiver by
holding just the antenna.
s4 RANSMITTINGWITHOUTANANTENNA
can damage the transceiver.
DHandstrap
Pass the handstrap through
the loop on the back side of
the transceiver as shown.
DBelt clip
Attach the belt clip to, or detach the belt clip from the transceiver.
Handstrap Belt clip
Antenna
Charger*
* Not supplied, depending on the version)
To attach the belt clip To detach the belt clip
Be careful!
Don’t break your
fingernail.
q
Belt clip
w
Lift the tab up (q), and slide
the belt clip in the direction
of the arrow (w).

NCharger
IMPORTANT: Prior to use the transceiver for the first
time, fully charge the battery for optimum life and opera-
tion. To avoid damage to the battery, turn OFF the power
while charging.
DCharging
q Turn OFF the power.
w Connect the charger as shown below.
sThe battery icon scrolls while charging.
e The charging is completed in approximately 3 hours, de-
pending on the remaining capacity before charging.
DCharging from other than supplied charger
3
2
SUPPLIED ACCESSORIES AND ATTACHMENTS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Charger
[DC] connector
Power OFF
rt
USB to Micro-B USB cable (purchase separatelly)
*Some PCs may not supply
the required voltage and current.

External battery
AC power converter
Cigarret lighter socket
with power converter
*5 V, 1 A must be guaranteed.

4
PANEL DESCRIPTION
3
ANTENNA CONNECTOR (p. 2)
Connect the supplied antenna.
SPEAKER/MIC JACK [SP/MIC] (p. 23)
Connect the optional speaker microphone (HM-213) here.
PTT SWITCH [PTT]
Hold down to transmit: release to receive. (p. 11)
POWER KEY [ ]
Hold down to turn power ON or OFF.
CHANNEL 16 KEY [16 9]
±0USHTOSELECT#HANNELP
±
(OLDDOWNFORSECONDTOSELECTTHE#ALLCHANNELP
Function display
Speaker
SCAN
VOL/SQL
[16/9]
PTT
PWR SWICH
[UP/DWN]
[SP/MIC] JACK
Antenna connector
[CH/WX]*
[FAV]
[Hi/Lo]
Microphone
DC JACK
4Close up firmly when no cable is conencted.
4Make sure dust or other material does not adhere to the seal.
Otherwise, waterproof protection may not be guaranteed.
1) Rotate the cap counter clockwise. 2) Pull the cap up to detach it.
NNomenclature and main functions

VOLUME/SQUELCH/MONITOR KEY [VOL/SQL MONI]
±Push when you adjust the volume level. While the
"VOL" icon blinking, push [UP]/[DWN] to adjust the vol-
ume level.
The Volume Mute function:
±While holding down this key, push [Z] to temporary
maximize the volume level. Do the same operation
again to turn OFF the function.
The Volume Loud function:
±While holding down this key, push [Y] to temporary
mute the audio output. Do the same operation again to
turn OFF the function.
SCAN/DUAL KEY [SCAN DUAL]
±Push to start or stop a normal or priority scan. (p. 15)
±
Hold down for 1 second to enter the Dual/Tri-watch
mode. (p. 16)
±Hold down this key and
[Hi/Lo] for 1 second, to activate
the Aq
uaQuake function. (p. 13)
CHARGING CONNECTOR
Connect the supplied charger.
UP/DOWN KEYS [Y]or [Z]
±0USHTOSELECTANOPERATINGCHANNELPP
FAVORITE/TAG KEY [FAV TAG]
±Push to sequentially select the favorite (TAG) channels
SKIPPINGUNTAGGEDCHANNELSP
±Hold down for 1 second to set or clear the selected
channel as the TAG channel. (p. 15)
CHANNEL/WEATHER CHANNEL KEY [CH/WX U/I/C]
±Push to switch between a regular channel and a
WEATHERCHANNELP
±Hold down for 1 second to select the channel group
FROM53!)NTERNATIONALAND#ANADAP
TRANSMIT POWER/LOCK KEY [Hi/Lo ]
±
Push to select the output power from high and low. (p.11)
±Hold down for 1 second to lock the key.
5
3
PANEL DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

6
3PANEL DESCRIPTION
NFunction display
TRANSMIT ICON (p. 11)
Appears while transmitting.
BUSY ICON
±Appears while receiving a signal or when the squelch
opens. (p. 11)
±"LINKSWHILETHE-ONITORFUNCTIONIS/.P
TAG CHANNEL ICON (p. 15)
Appears when a TAG channel is selected.
CALL CHANNEL INDICATORP
Appears when the Call channel is selected.
BATTERY ICONS
±Displays the remaining battery capacity.
Indication
Full Middle Charging
required Exhausted
Battery status
±Scrolls while charging.
BUSY ICON ATIS
CHANNEL NUMBER READOUT
BATTERY ICONS
TRANSMIT ICON
LOW POWER INDICATOR
TAG CHANNEL ICON
CHANNEL GROUP INDICATOR
KEY LOCK ICON
WX Alert
received
WX channel isselected
CALL CHANNEL
INDICATION
Blinkswhile adjusting.
“SQL”= Squelch level “VOL”= Volume level
VOLUME/SQUELCH LEVEL ICON
DUPLEX INDICATOR
TRI-WATCH INDICATOR
DUALWATCH INDICATOR
SCAN INDICATOR

SCAN INDICATOR (p. 15)
"LINKSDURINGASCAN
LOCK ICON (p. 13)
Appears when the Lock function is turned ON.
DUALWATCH/TRI-WATCH INDICATORS (p. 16)
“DW” appears during Dualwatch.
“TW” appears during Tri-watch.
DUPLEX INDICATOR
Appears when a duplex channel is selected.
SUB CHANNEL READOUT
±Displays Channel 16 during a priority scan, Dualwatch
or Tri-watch. (p. 16)
±Displays the Set mode item while in the Set mode. (p. 17)
SQUELCH/ VOLUME LEVEL ICON
±Displays the squelch/volume level.
±“ SQL” blinks while adjusting the squelch level. (p. 10)
±“ VOL” blinks while adjusting the volume level. (p. 10)
±The bars repeatedly appear in ascending order when
the Volume Loud function is turned ON. (p. 12)
±The bars blink while the Volume Mute function is turned
ON. (p. 12)
CHANNEL NUMBER READOUT
Displays the selected operating channel number.
CHANNEL GROUP ICON P
Displays the selected channel group.
WEATHER CHANNEL/WEATHER ALERT ICONS P
±“WX” appears when the weather channel group is se-
lected.
±“” appears while the Weather Alert function is turned
ON, and blinks when the alert tone is received.
LOW POWER ICON (p. 11)
±“ LOW” appears when the low TX power is selected.
±“LOW” blinks when switching to the low power mode is
forced because of a high temperature error or low volt-
age.
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PANEL DESCRIPTION
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
BASIC OPERATION
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NSelecting channel
Choose the appropriate channel groups for your operating
area, and then select the channel.
DSelecting channel group
4 HETRANSCEIVERISPREPROGRAMMEDWITH53!)NTERNA-
tional and 65 Canadian channels.
±Hold down [U/I/C] (CH/WX) for 1 second to change the
channel group. Repeat to advance to the next group.
DSelecting regular channel
±Push [Y]or [Z]to select a channel.
shDUP” appears for duplex channels.
 sh!vAPPEARSWHENASIMPLEXCHANNELISSELECTED

DChannel 16
Channel 16 is the distress and safety channel. It is used for
establishing initial contact with a station, and for emergency
communications. While in the standby mode, you must moni-
tor Channel 16.
qPush [16] momentarily to select Channel 16.
w
Push [CH/WX] to recall the channel, displayed before se-
lecting Channel 16.
DChannel 9 (Call channel)
#HANNELISALEISUREUSE#ALLCHANNEL%ACHCHANNELGROUP
has a Call channel.
qHold down [9] (16) for 1 second to select the Call channel
of the selected channel group.
shCALL” and the Call channel number appear.
w Push [CH/WX] to recall the channel displayed before select-
ing Channel 16.
DWeather channels
The transceiver has 10 weather channels. These are used
for monitoring broadcasts from NOAA (National Oceanic and
Atmospheric Administration).
The transceiver can automatically detect a weather alert
tone on the selected weather channel while receiving an-
OTHERCHANNELORDURINGASCANP
qPush [CH/WX] once or twice to select the Weather chan-
nel group.
shWX” appears when a weather channel is selected.
wPush [Y]or [Z]to select a weather channel.

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NReceiving and transmitting
CAUTION: Transmitting without an antenna can damage
the transceiver.
q Push [Y]or [Z]to select the channel.
s7 HENASIGNALISRECEIVEDh ” appears.
w Hold down [PTT], and then speak into the microphone.
sh ” appears while transmitting.
e Release [PTT] to receive.
IMPORTANT: To maximize the readability of your trans-
mitted signal, pause for a second after pushing [PTT],
hold the microphone 5 to 10 cm (2 to 4 inches) from your
mouth and speak into the microphone at a normal voice
level.
For U.S.A version: To prevent prolonged transmission, a
time-out timer cuts OFF after 5 minutes of continuous
transmission.
NAdjusting the volume level
You can adjust the volume level while the “VOL” icon is blinking.
q Push [VOL/SQL] once.
 s4 HEhVOL” icon starts blinking.
 s)FNOKEYOPERATIONISPERFORMEDFORSECONDSTHETRANSCEIVER
returns to the normal mode.
w Push [Y]or [Z] to adjust the volume level.
s4 HELEVELISDISPLAYEDONTHESCREEN
ePush [VOL/SQL] twice.
 s2ETURNSTOTHENORMALOPERATINGMODE
4) Release to receive.
1) Select a channel.
2) Push to transmit.
3) Speak into the microphone.

NAdjusting the squelch level
Squelch is a function that allows the audio to be heard only
while receiving a signal that is stronger than a set level. You
can adjust the squelch threshold level.
A higher level blocks weak signals, so you receive only
stronger signals. A lower level allows you to hear weak sig-
nals including noise.
Adjust the squelch level when you want to:
sBLOCKWEAKSIGNALSINCLUDINGNOISE3ETTHELEVELHIGHER
sHEARWEAKSIGNALSEVENINTHENOISE3ETTHELEVELLOWER
You can adjust the squelch level while the “SQL” icon is blinking.
q Push [VOL/SQL] twice.
 s4 HEhSQL” icon starts blinking.
 s)FNOKEYOPERATIONISPERFORMEDFORSECONDSTHETRANSCEIVER
returns to the normal mode.
w Push [Y]or [Z] to adjust the squelch level.
s4 HELEVELISDISPLAYEDONTHESCREEN
ePush [VOL/SQL] once.
 s2ETURNSTOTHENORMALOPERATINGMODE
NMonitor function
The Monitor function momentary cancels the squelch func-
tion.You can check for weak signals including noise.
±Hold down [MONI] (VOL/SQL) .
sh ” blinks.
 s)FTHEREISAWEAKSIGNALYOUCANHEARTHESIGNALANDNOISE
 s Release [MONI] (VOL/SQL) to return the normal squelch mode.
NOTE:
This function has options. See page ?? for more.
NToggling the transmit power
If you receive no response to your call, your transmit signal might
not be reached to your callee. Choose high power (5 W: default) for
longer distance communications.
On the other hand, transmitting at low power is enough to commu-
nicate, according to the distance. Choose low power (1 W) for short
range and battery conservation.
± Push [Hi/Lo] to toggle the transmit power between low and high.
shLOW” is displayed when low power is selected. When high power
is selected, no icon is displayed.
NOTE:
s3OMECHANNELSARERESTRICTEDTOLOWPOWER
sYou cannot transmit on Channel 70. 11
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NVolume Loud function
You can temporary maximize the volume level with a simple
operation.
qWhile holding down [VOL/SQL], push [Y].
 s4 HEVOLUMELEVELISSETTOTHEMAXIMUMLEVEL
s4 HEBARSOFTHEVOLUMELEVELICONREPEATEDLYAPPEARINASCEND-
ing order.
wPush [VOL/SQL] and [Y]again to turn OFF the function.
NVolume Mute function
You can temporary mute the audio output with a simple op-
eration.
qWhile holding down [VOL/SQL], push [Z].
 s4 HEVOLUMELEVELISSETTOTHEMINIMUMLEVEL/&&
 s4 HEBARSOFTHEVOLUMELEVELICONBLINK
wPush [VOL/SQL] and [Z]again to turn OFF the function.
NLock function
This function electronically locks the keys to prevent acci-
dental changing of the channel and function access.
±Hold down
[ ] (Hi/Lo) for 1 second to turn the function
ON and OFF.
NOTE:
[PTT], [VOL/SQL], [MONI] (VOL/SQL), [ ] (Hi/Lo) and [Y]
or [Z]* are not locked.
*Only while the adjusting the volume or squelch, and volume loud
and Volume Mute functions.
N AquaQuake Water Draining function
Water in the speaker grill may muffle the sound coming from
the speaker. The AquaQuake Water Draining function removes
water from the speaker grill, by generating vibrating sound.
±Hold down both [SCAN] and [Hi/Lo].
 s!LOWVIBRATIONTONESOUNDSFORSECONDSTODRAINWATERRE-
gardless of the volume level setting.
s4 HETRANSCEIVERDOESNOTACCEPTANYKEYOPERATIONSWHILETHIS
function is activated.