Icom IC-M33 User manual

INSTRUCTION MANUAL
iM33
VHF MARINE TRANSCEIVER

i
CE versions of the IC-M33 which display the
“CE” symbol on the serial number label, comply
with the essential requirements of the European
Radio and Telecommunication Terminal Directive
1999/5/EC.
This warning symbol indicates that this equip-
ment operates in non-harmonised frequency
bands and/or may be subject to licensing con-
ditions in the country of use. Be sure to check
that you have the correct version of this radio or
the correct programming of this radio, to comply
with national licensing requirement.
• List of Country codes (ISO 3166-1)
1 Austria AT
2 Belgium BE
3 Bulgaria BG
4 Croatia HR
5 Czech Republic CZ
6 Cyprus CY
7 Denmark DK
8 Estonia EE
9 Finland FI
10 France FR
11 Germany DE
12 Greece GR
13 Hungary HU
14 Iceland IS
15 Ireland IE
16 Italy IT
17 Latvia LV
18 Liechtenstein LI
19 Lithuania LT
20 Luxembourg LU
21 Malta MT
22 Netherlands NL
23 Norway NO
24 Poland PL
25 Portugal PT
26 Romania RO
27 Slovakia SK
28 Slovenia SI
29 Spain ES
30 Sweden SE
31 Switzerland CH
32 Turkey TR
33 United Kingdom GB
Country Codes Country Codes
DECLARATION
OF CONFORMITY
We Icom Inc. Japan
1-1-32, Kamiminami, Hirano-ku
Osaka 547-0003, Japan
Kind of equipment:
VHF MARINE TRANSCEIVER
This compliance is based on conformity with the following harmonised
standards, specifications or documents:
i) EN 301 178-2 V1.1.1 (2000-8)
ii) EN 60945 2002
iii) EN 60950-1 2001
iv) EN 300 698-2 V1.1.1 (2000-8)
v) EN 300 698-3 V1.1.1 (2001-5)
vi)
vii)
Type-designation: ic-m33
Signature
H. Ikegami
General Manager
Düsseldorf 30th Nov. 2006
Himmelgeister straße 100
D-40225 Düsseldorf
Icom (Europe) GmbH
Authorized representative name
Place and date of issue
Version (where applicable):
Declare on our sole responsability that this equipment complies the
essential requirements of the Radio and Te lecommunications Te rminal
Equipment Directive, 1999/5/EC, and that any applicable Essential Te st
Suite measurements have been performed.
0560
DOC

ii
IN CASE OF EMERGENCY
If your vessel requires assistance, contact other vessels and
the Coast Guard by sending a distress call on Channel 16.
RECOMMENDATION
CLEAN THE TRANSCEIVER THOROUGHLY WITH FRESH
WATER after exposure to saltwater, and dry it before opera-
tion. Otherwise, the transceiver's keys, switches and control-
lers may become unusable due to salt crystallization.
NOTE: DO NOT wash the transceiver in water if there is any
reason to suspect the waterproof protection may not be ef-
fective. For example, in cases where the battery pack rubber
seal is damaged, the transceiver/battery pack is cracked or
broken, or has been dropped, or when the battery pack is
detached from the transceiver.
❍ 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.

FOREWORD
Thank you for purchasing this Icom radio. The IC-M33 v h f m a -
r i n e t r a n s c e i v e r 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-M33.
EXPLICIT DEFINITIONS
FEATURES
☞Submersible construction
Built tough to withstand the punishing marine environ-
ment, the transceiver’s submersible construction meets
IPX7* requirements for waterproof protection (1 meter
depth for 30 min.).
* Only when the BP-251 (option) or BP-252, flexible antenna,
[SP MIC] cap is attached.
☞Floating on water
The transceiver floats on fresh or salt
water even when the supplied acces-
sories are attached.
 •Whenathird-partybatterypack,strap,
antenna, etc. is used, it may sink.
 •Thebatterycontactsmaybepronetorust
if the transceiver is kept floating in fresh or
salt water.
☞Large, easy-to-read LCD
With dimensions of 16(H)×32(W) mm, the function dis-
play is easy to read and shows operating conditions at a
glance. Backlighting and contrast can be adjusted to suit
your preferences.
☞Easy to use, easy to hold
9 large buttons on the front panel provide user-friendly
operation. The transceiver weighs only 305 g, and the
easy-to-hold rounded body fits comfortably in your hand.
iii
WORD DEFINITION
RDANGER Personal death, serious injury or an
explosion may occur.
RWARNING Personal injury, fire hazard or electric
shock may occur.
CAUTION Equipment damage may occur.
NOTE
If disregarded, inconvenience only. No risk
of personal injury, fire or electric shock.

iv
PRECAUTIONS
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 from exposed parts of the
body, especially the face or eyes, while transmitting. The
transceiver will perform best if the microphone is 5 to 10 cm
away from the lips and the transceiver is vertical.
NEVER connect the transceiver to a power source other
than the BP-251 (option) or BP-252. Such a connection will
ruin the transceiver.
DO NOT use or place the transceiver in direct sunlight or
in areas with temperatures below –15°C or above +55°C.
KEEP the transceiver out of the reach of children.
KEEP the transceiver at least 0.9 meters away from your
vessel’s magnetic navigation compass.
BE CAREFUL! The transceiver’s right-side panel will
become hot when operating continuously for long periods.
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 BP-251 (option) or BP-252, flexible antenna,
[SP MIC] cap is attached.
MAKE SURE the flexible antenna and battery pack are
securely attached to the transceiver, and that the antenna
and battery pack are dry before attachment. Exposing the in-
side of the transceiver to water will result in serious damage
to the transceiver.
After exposure to water, clean the battery contacts thor-
oughly with fresh water and dry them completely to remove
any water or salt residue.
Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incor-
porated (Japan) in Japan, the United States, the United Kingdom, Germany,
France, Spain, Russia and/or other countries.
All other products and brands are registered trademarks or trademarks of
their respective holders.

v
DOC.............................................................................................i
IN CASE OF EMERGENCY....................................................... ii
RECOMMENDATION .................................................................ii
FOREWORD ............................................................................. iii
IMPORTANT.............................................................................. iii
EXPLICIT DEFINITIONS........................................................... iii
FEATURES................................................................................ iii
PRECAUTIONS.........................................................................iv
TABLE OF CONTENTS..............................................................v
1 OPERATING RULES �����������������������������������������������������������1
2 SUPPLIED ACCESSORIES AND ATTACHMENTS ��������2–3
■Supplied accessories........................................................2
■Attachments......................................................................2
3 PANEL DESCRIPTION ���������������������������������������������������4–7
■Front, top and side panels ................................................4
■Function display ...............................................................6
4 BASIC OPERATION �����������������������������������������������������8–13
■Channel selection ............................................................8
■Receiving and transmitting ............................................10
■Call channel programming .............................................11
■Adjusting the volume level .............................................11
■Volume mute function .....................................................11
■Adjusting the squelch level ............................................12
■Lock function ..................................................................12
■Automatic backlighting ...................................................12
■Monitor function .............................................................13
■AquaQuake water draining function ...............................13
5 SCAN OPERATION (Except Holland version) ���������14–15
■Scan types .....................................................................14
■Setting TAG channels .....................................................15
■Starting a scan ...............................................................15
6 DUALWATCH/TRI-WATCH (Except Holland version) ����16
■Description .....................................................................16
■Operation .......................................................................16
7 SET MODE ������������������������������������������������������������������17–20
■Set mode programming .................................................17
■Set mode items ..............................................................18
8 BATTERY CHARGING ������������������������������������������������21–24
■Battery caution ...............................................................21
■Supplied battery charger ................................................23
■Optional battery case......................................................23
■Optional battery charger ................................................24
9 OPTIONAL SPEAKER-MICROPHONE ����������������������������25
■HM-165 descriptions ......................................................25
■Attachment .....................................................................25
10 TROUBLESHOOTING ������������������������������������������������������26
11 VHF MARINE CHANNEL LIST ���������������������������������� 27–29
12 SPECIFICATIONS ������������������������������������������������������������� 30
13 OPTIONS ���������������������������������������������������������������������������31
TABLE OF CONTENTS

1
1
OPERATING RULES
1
D Priorities
•Readallrulesandregulationspertainingtoprioritiesand
keep an up-to-date copy handy. Safety and distress calls
take priority over all others.
•YoumustmonitorChannel16whenyouarenotoperating
on another channel.
•Falseorfraudulentdistresscallsareprohibitedunderlaw.
D Privacy
•Informationoverheardbutnotintendedforyoucannotlaw-
fully be used in any way.
•Indecentorprofanelanguageisprohibited.
D Radio licenses
(1) SHIP STATION LICENSE
When your craft is equipped with a VHF FM transceiver, you
must have a current radio station license before using the
transceiver. It is unlawful to operate a ship station which is
not licensed.
Inquire through your dealer or the appropriate government
agency for a Ship-Radiotelephone license. This license
includes 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.
The Restricted Radiotelephone Operator Permit must be
posted near the transceiver or be kept with the operator.
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.

2
SUPPLIED ACCESSORIES AND ATTACHMENTS
2
■ Supplied accessories
■ Attachments
DFlexible antenna
Connect the supplied flexible an-
tenna to the antenna connector.
CAUTION:
•NEVER carry the transceiver
by holding the antenna.
•Transmittingwithoutanan-
tenna may damage the trans-
ceiver.
DHandstrap
Pass the handstrap through
the loop on the side of the
transceiver as illustrated at
right. This facilitates carry-
ing.
DBelt clip
Attach/detach the belt clip to the transceiver as illustrated
below.
Battery packHandstrap
Belt clip
Battery charger
(with 2 screws)
Antenna
AC adapter
(Different type or no
AC adapter is
supplied depending
on the version)
To attach the belt clip To detach the belt clip
wBe careful!
Not to break
your nails.
q

Screw position
when removing battery
Screw position
when attaching battery
Make sure the rubber seal (purple) is properly seated in the
groove and dust or other material does not adhere to it.
Battery pack Battery pack
Rubber seal
Groove
Correct position Incorrect position
NOTE:
When attaching a battery pack, make sure dust or other
material does not adhere to the rubber seal. If dust or other
material is on the seal when attaching a battery pack,
waterproof protection may be compromised.
3
2
SUPPLIED ACCESSORIES AND ATTACHMENTS
2
DBattery pack
To remove the battery pack:
Turn the screw counterclockwise one quarter turn, then
pull the battery pack in the direction of the arrow as shown
below.
To attach the battery pack:
Insert the battery pack in the transceiver completely, then
turn the screw clockwise one quarter turn.
NEVER remove or insert the battery pack when the trans-
ceiver is wet or soiled. This may result water or dust get-
ting into the transceiver/battery pack and may result in the
transceiver being damaged.
NOTE: When removing or attaching the battery pack, use
a coin or standard screwdriver to loosen or tighten the
bottom screw.
CAUTION:
When attaching or removing a battery pack, make sure
the rubber seal is set in the groove of the battery pack
correctly. If the seal is not neatly in the groove it may be
damaged when attaching the battery pack. If the seal is
damaged, waterproof protection is not guaranteed.

4
PANEL DESCRIPTION
3
■ Front, top and side panels
q POWER SWITCH [PWR]
Push and hold to turn power ON and OFF.
w SPEAKER-MICROPHONE CONNECTOR [SP MIC]
(p. 25)
Connects the optional external speaker-microphone.
NOTE: Attach the [SP MIC] cap when the optional
speaker-microphone is not used. Otherwise, water will
get into the transceiver.
e ANTENNA CONNECTOR (p. 2)
Connects the supplied antenna.
rCHANNEL KEY [CH]
➥Selects the regular channel when pushed. (p. 9)
➥
Selects the U.S.A.*1, International, Canadian*2or ATIS*3
channel group when pushed and held for 1 sec. (p. 9)
➥Push to return to the previous channel before selecting
Channel 16 or the call channel.
*
1U.K. and China versions only.
*
2 China version only.
*3German and Holland versions only.
Microphone Function display
(pgs. 6, 7)
Speaker
o
!2
!1
!0
i
t
y
u
r
w
qe
qAttach the [SP MIC] cap.
wThen rotate it clockwise
completely.
w
q

5
3
PANEL DESCRIPTION
3
t FAVOURITE/TAG KEY [FAV•TAG]
➥
While pushing and holding this key, push [Y]/[Z] to se-
lect the favourite (TAG) channels with ignoring untagged
channels in the selected channel group in sequence.
(p. 8)
  •PushingthiskeyonlyadvancesthedisplayedTAGchannel.
➥Push and hold for 1 sec. to set or clear the displayed
channel as a TAG (scanned) channel. (p. 15)
➥While pushing and holding this key, turn power ON to
clear or set all TAG channels (when no TAG channel
has been set) in the selected channel group. (p. 15)
y SQUELCH/MONITOR KEY [SQL•MONI]
➥Push this key, then adjust the squelch level with [Y]/[Z].
(p. 12)
➥Manually opens the squelch for monitoring the channel
while pushing and holding. (p. 13)
➥While pushing and holding this key, turn power ON to
enter the set mode. (p. 17)
uTRANSMIT POWER/LOCK KEY [H/L•LOCK]
➥Selects high or low power when pushed. (p. 10)
➥Toggles between the key lock function ON/OFF when
pushed and held for 1 sec. (p. 12)
iCHANNEL UP/DOWN KEYS [Y]/[Z]
➥Selects an operating channel. (pgs. 8, 9)
➥Selects the set mode setting of the item. (p. 17)
➥Checks TAG channels or changes scanning direction
during scan. (p. 15)
oSCAN/DUAL KEY [SCAN•DUAL]
➥Push to start or stop normal or priority scan. (p. 15)
➥Push and hold for 1 sec. to enter watch mode. (p. 16)
➥Push and hold this key and [H/L], to activate the
AquaQuake function. (p. 13)
➥Exits watch mode when pushed during watch opera-
tion. (p. 16)
!0 VOLUME KEY [VOL•MUTE]
➥Push this key, then adjust the volume level with [Y]/[Z].
(p. 11)
➥Push and hold for 1 sec. to activate the volume mute
function. (p. 11)
!1 CHANNEL 16 KEY [16•C]
➥Push to select Channel 16. (p. 8)
➥
Push and hold for 1 sec. to select the call channel. (p. 8)
➥Enters call channel programming condition when the
call channel is selected and this key is pushed and held
for 3 sec. (p. 11)
➥
Push to exit set mode during set mode operation. (p. 17)
!2 PTT SWITCH [PTT]
Push and hold to transmit; release to receive. (p. 10)

6
3PANEL DESCRIPTION
■ Function display
q TRANSMIT INDICATOR (p. 10)
Appears while transmitting.
w BUSY INDICATOR
➥Appears when receiving a signal or when the squelch
opens. (p. 10)
➥Blinks while monitoring. (p. 13)
e TAG CHANNEL INDICATOR (p. 15)
Appears when a TAG channel is selected.
r CALL CHANNEL INDICATOR (p. 8)
Appears when the call channel is selected.
t LOCK INDICATOR (p. 12)
Appears while the lock function is activated.
y BATTERY INDICATOR
Indicates remaining battery power.
u SCAN INDICATOR (p. 15)
Blinks while scanning.
i DUALWATCH/TRI-WATCH INDICATORS (p. 16)
“ DUAL” appears during Dualwatch; “TRI” appears during
Tri-watch.
o DUPLEX INDICATOR
Appears when a duplex channel is selected.
!0 SUB CHANNEL READOUT
➥Indicates Channel 16 during priority scan, Dualwatch
or Tri-watch. (p. 16)
➥Indicates the set mode item while in set mode. (p. 17)
➥Indicates the squelch level while squelch setting. (p. 12)
➥Indicates the volume level while volume setting. (p. 11)
Indication
Full Middle Charging
required No battery
Battery level
blinks when the battery is exhausted.
blinks when the battery is over charged.
!5 !3!4
i
u
o
!2
!1
!0
!8
!6
qerytw
!7

7
3
PANEL DESCRIPTION
3
!1 SQUELCH LEVEL INDICATOR
Shows the squelch level.
!2 VOLUME LEVEL INDICATOR
➥Shows the volume level.
➥Blinks when the volume mute is activated. (p. 11)
!3 VOLUME LEVEL ADJUSTING INDICATOR (p. 11)
Blinks while adjusting the volume level.
!4 SQUELCH LEVEL ADJUSTING INDICATOR (p. 12)
Blinks while adjusting the squelch level.
!5 CHANNEL NUMBER READOUT
➥Indicates the selected operating channel number.
➥In set mode, indicates the selected condition.
!6 CHANNEL GROUP INDICATOR (p. 9)
“ ” appears when U.S.A.*1; “ ” appears when International;
"" appears when Canadian*2channel group is selected.
*
1
U.K. and China versions only.
*2China version only.
!7 ATIS INDICATORS (p. 9)
“ ATIS” appears when the channel group, which ATIS
function is activated, is selected. (Available with German and
Holland versions only)
!8 LOW POWER INDICATOR (p. 10)
➥“ LOW” appears when low power is selected.
➥“ LOW” blinks when switching forced low power mode
because of a high temperature error or low voltage.

8
BASIC OPERATION
4
■ Channel selection
IMPORTANT: Prior to using the transceiver for the first
time, the battery pack must be fully charged for optimum
life and operation. To avoid damage to the transceiver,
turn the power OFF while charging.
D Channel 16
Channel 16 is the distress and safety channel. It used for
establishing initial contact with a station and for emergency
communications. Channel 16 is monitored during both Du-
alwatch and Tri-watch. While standing by, you must monitor
Channel 16.
qPush [16] momentarily to select Channel 16.
wPush [CH] to return to the channel used before Channel
16, or push [Y]/[Z]to select a channel.
Convenient!
While pushing and holding [FAV], push [Y]/[Z] to select the
favourite (TAG) channels with ignoring untagged channels in
the selected channel group in sequence.
•Pushing[FAV] only advances the displayed TAG channel.
•ThefavouritechannelsareselectedusingtheTAGchannelsetting.
(p. 15)
D Call channel
Each regular channel group has separate leisure-use call
channels. The call channel is monitored during Tri-watch.
The call channels can be programmed (p. 11) and are used
to store your most often used channel in each channel group
for quick recall.
qPush and hold [C] (16) for 1 sec. to select the call chan-
nel of the selected channel group.
 •“CALL” and call channel number appear.
 •Eachchannelgroupmayhaveanindependentcallchannel
after programming a call channel. (p. 11)
wPush [CH] to return to the channel used before call chan-
nel, or push [Y]/[Z]to select a channel.
Push and hold
for 1 sec.
Push

9
4
BASIC OPERATION
4
D U�S�A�, International, Canadian and ATIS channels
The transceiver is pre-programmed with U.S.A.*1, International,
Canadian*2and ATIS*3channels. These channel groups may
be specified for the operating area.
qPush [CH] to select a regular channel.
wPush and hold [CH] for 1 sec. to change the channel
group. Repeat to advance to the next group .
•
The usable channel groups are different, depending on the
transceiver version.
ePush [Y]/[Z]to select a channel.
 •“DUP” appears for duplex channels.
*1U.K. and China versions only. *2China version only.
*3German and Holland versions only.
For U�K� version
For German and Holland versions
For China version
Push and hold
for 1 sec.
U.S.A. channels
International channels
Canadian channels
U.S.A. channels
Push and hold
for 1 sec.
International channels
Push and hold
for 1 sec.
International channels ATIS channels

10
4BASIC OPERATION
■ Receiving and transmitting
CAUTION: Transmitting without an antenna will damage
the transceiver.
q Push and hold [PWR] to turn power ON.
w Set the audio and squelch levels.
➥ Push [SQL], and push [Z]several times to open the squelch.
➥Push [VOL], then push [Y]/[Z]to adjust the volume level.
➥Push [SQL], and push [Y]until the noise disappears.
e Push [Y]/[Z]to select the desired channel.
•Whenreceivingasignal,“ ” appears and audio is emitted
from the speaker.
•Furtheradjustmentoftheaudiomaybenecessaryatthispoint.
r Push [H/L] to select the output power if necessary.
•“LOW” appears when low power is selected; no indication when
high power is selected.
•Chooselowpowertoconservebatterypower,choosehigh
power for longer distance communications.
•Somechannelsareforlowpoweronly.
t Push and hold [PTT] to transmit, then speak into the mi-
crophone.
•“ ” appears.
•Channel70cannotbeusedfortransmission.
y Release [PTT] to receive.
IMPORTANT: To maximize the readability of your trans-
mitted signal, pause a few sec. after pushing [PTT], hold
the microphone 5 to 10 cm from your mouth and speak
into the microphone at a normal voice level.
NOTE: The transceiver has a power save function to
conserve the battery power. The power save function acti-
vates automatically when no signal is received for 5 sec.
Microphone
rSet output
power.
qPower ON.
wSet the
squelch level.
wSet volume.
tPush to
transmit.
yRelease to
receive.
eÊSet channel.
Set the squelch
and volume level.
w

11
4
BASIC OPERATION
4
■ Call channel programming
Call channel is used to access Channel 16 (default; may dif-
fer according to version), however, you can program the call
channel with your most often-used channels in each channel
group for quick recall.
qPush and hold [CH] for 1 sec. several times to select the
desired channel group (U.S.A., International, Canadian or
ATIS) to be programmed. (p. 9)
wPush and hold [C] (16) for 1 sec. to select the call chan-
nel of the selected channel group.
 •“CALL” and call channel number appear.
ePush and hold [C] (16) again for
3 sec. (until a long beep changes
to 2 short beeps) to begin call
channel programming.
 •Channelnumberstartsblinking.
rPush [Y]/[Z]to select the de-
sired channel.
tPush [16] to program the dis-
played channel as the call chan-
nel.
 •Thechannelnumberstopsblinking.
■ Adjusting the volume level
The volume level can be adjusted with [VOL] and [Y]/[Z].
qPush [VOL], then adjust the volume level with [Y]/[Z].
 •“VOL” indicator starts blinking.
 •Thereare31volumelevelsandOFF.
 •Whennokeyispushedfor5sec.,thetransceiverreturnsto
normal condition.
wPush [VOL] again to return to normal condition.
■ Volume mute function
The volume mute function can be activated temporarily with
[MUTE] (VOL).
qPush and hold [MUTE] (VOL) for 1 sec to activate the vol-
ume mute function.
 •Theaudioismuted.
 •Thevolumelevelindicatorstartsblinking.
wPush [VOL] again or turn power OFF to turn the volume
mute function OFF.
Indicates the
volume level.
Blinks during volume level adjustment.

12
4BASIC OPERATION
■ Adjusting the squelch level
To adjust the squelch level, use the [Y]/[Z]keys as de-
scribed below. In order to receive signals properly, as well
as for the scan to function effectively, the squelch must be
adjusted to the proper level.
qPush [SQL], then adjust the squelch level with [Y]/[Z].
 •“SQL” indicator starts blinking.
 •Thereare11squelchlevelstochoosefrom:OPiscompletely
open; 10 is tight squelch; 1 is loose squelch.
 •Ifnokeyispushedfor5sec.,thetransceiverreturnstonormal
operation.
wPush [SQL] again to return to normal condition.
■ Lock function
This function electronically locks all keys (except for [PTT],
[SQL•MONI], [VOL•MUTE], [H/L•LOCK] and [Y]/[Z]*) to
prevent accidental channel changes and function access.
* After pushing [VOL•MUTE] or [SQL•MONI] only.
➥Push and hold [LOCK] (H/L) for 1 sec. to turn the lock
function ON and OFF.
Push and hold
for 1 sec.
Appears while the lock
function is used.
■ Automatic backlighting
This function is convenient for nighttime operation. The auto-
matic backlighting can be activated in set mode. (p. 19)
➥Push any key except for [PTT] to turn the backlighting
ON.
 •ThebacklightingisautomaticallyturnedOFFafter5sec.ofin-
activity.
Blinks during squelch
level adjustment.
Indicates the
squelch level.

13
4
BASIC OPERATION
4
■ Monitor function
The monitor function opens the squelch. See p. 5 for details
of the monitor key action.
➥The monitor function activates while pushing and holding
[MONI] (SQL).
 •“ ” blinks and audio is emitted.
■ AquaQuake water draining function
The transceiver uses a new technology to clear water away
fromthespeakergrill:AquaQuake.AquaQuakehelpsdrain
water away from the speaker housing (water that might
otherwise muffle the sound coming from the speaker). The
transceiver emits a vibrating beep when this function is
being used.
➥Push and hold both [SCAN] and [H/L].
 •Alowbeeptonesoundsfor9sec.todrainwater,regardlessof
volume level setting.
 •Thetransceiverdoesnotperformkeyoperationswhilethe
AquaQuake function is activated. The AquaQuake function can not
be activated when an optional speaker-microphone is connected.
Push and hold
Blinks while the monitor function is used.

14
SCAN OPERATION (Except Holland version)
5
■ Scan types
Scanning is an efficient way to locate signals quickly over a
wide frequency range. The transceiver has priority scan and
normal scan.
In addition, auto scan function is available for standby con-
venience. This function can be activated depending on the
setting in set mode. (p. 18)
Set the TAG channels (scanned channels) before scanning.
Clear any TAG channels which inconveniently stop scanning,
such as digital communications.
Choose priority or normal scan in set mode. (p. 18)
PRIORITY SCAN
CH 88
CH 01
CH 16
CH 02
CH 05 CH 04
CH 03
Priority scan searches through all TAG channels in se-
quence while monitoring Channel 16. When a signal is
detected on Channel 16, scan pauses until the signal
disappears; when a signal is detected on a channel other
than Channel 16, scan becomes Dualwatch until the sig-
nal disappears.
NORMAL SCAN
CH 01 CH 02
CH 88
CH 05 CH 04
CH 03
Normal scan, like priority scan, searches through all TAG
channels in sequence. However, unlike priority scan,
Channel 16 is not checked unless Channel 16 is set as a
TAG channel.