Icom IC-M57 User manual

VHF MARINE TRANSCEIVER
C—-M57
Icom Inc.
isiz
MARINE TRANSCEIVER IC -MS7
] OFFe .
PWR/VOL
SQUELCH

IMPORTANT
READ ALL INSTRUCTIONS carefully and completely for maximum
performance.
SAVE THIS INSTRUCTION MANUAL. The contents contain impor-
tant safety and operating instructions for the IC-M57.
CAUTIONS
NEVER connect the transceiver to more than 16 V DC or to an AC power
source.
NEVER allow children to touch the transceiver.
NEVER immerse the transceiver in water.
KEEP the transceiver and microphone at least 1 meter away from the ship's
magnetic navigation compass.
AVOID placing the transceiver in direct sunlight or subjecting it to temper-
atures below — 20 °C ( — 4°F ) or above +60°C (+140 F ).
BE CAREFUL! The transceiver is only weather resistant when the 4 cover
screws are securely tightened.
UNPACKING
Accessories included with the IC-M57:
Qty. Qty.
@ mounting bracket... eee 1 microphone hangel........ccccccecsseseees 1
@) mounting bracket knobs........... 4 @ DC power cable......cccccccccccscccccceeeeeees 1
@) flat washers (MA4)...........ccccseee 4 (OD mounting SCreWS...........0cccceseeeeees 4
flat washers (M5)...........cccccceeees 8 QD) star WASNESS............cccceccccccccesesccceeees 4
G) NUtS (M5)......ccccccssssssseeseseceseveees 4 (2 MOUNTING SCFEWS...........cceceseeceeseeeees 4
© mic hanger screws (3.5 X 3.0)..2 (3 external speaker plug... 1
@ FUSES (10A)......cccccesssecesssreeeees 2
_ Thank you for purchasing the IC-M57 VHF MARINE TRANSCEIVER. Using the most
advanced technology, Icom has produced a marine transceiver for those who want
simple operation.

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Hi Priorities
Mi Privacy
OPERATING RULES
1) Read all rules and regulations pertaining to priority
transmission and keep an up-to-date copy handy.
2) When not operating on another channel, Channel 16
must be monitored.
3) False or fraudulent distress calls are prohibited.
1) Information overheard but not intended for you cannot
be used in any way.
2) Indecent or profane language is prohibited.
Mi Radio licenses
1) Ship station license: when your craft is equipped with
a VHF FM marine transceiver, you must have a current
radio station license before transmitting. It is unlawful to
operate a station without a license. Ask your dealer or
the appropriate government agency for a _ Ship-
Radiotelephone License Application.
2) Operators’ license: a restricted Radiotelephone Oper-
ator Permit is the license most often held by small
vessel operators when a radio is not required for safety
purposes. This can usually be obtained by mail.
The permit must be posted near the transceiver or kept
with the operator.
Non-licensed individuals may talk over a transceiver
ONLY if a licensed operator starts, supervises, ends the
call and makes the necessary |og entries.

EE
VHF MARINE TRAN CEIVER IC-M57 °
e
[he
SQUELCH
Q) =
Mi Front panel
@ SPEAKER
@ FUNCTION DISPLAY
Displays the selected channel num-_
ber, etc.
© POWER SWITCH/VOLUME
CONTROL [PWR/VOL]
Turns power ON and OFF and
adjusts the speaker volume.
© MICROPHONE
@ PTT (Push-to-talk) SWITCH [PTT]
Push and hold to transmit; release
to receive.
@ SQUELCH CONTROL [SQUELCH]
-Rotate clockwise to eliminate au-
dio noise.
-Deep rotation activates the RF
attenuator to cut weak signal re-
ception.
@ CHANNEL 16 SWITCH [CH 16]
Selects Channel 16. Used for emer-
gency and distress calls and as a call
channel. .
© DIAL/ MODE SWITCH [D/MODE]
Selects U.S.A. or international chan-
nels.
© DUAL WATCH SWITCH [DUAL]
Starts and stops dual watch.
@ WEATHER CHANNEL SWITCH [WX]
Selects weather channels.
@ DIMMER SWITCH [DIM]
Turns the function display backlighting -
ON or OFF. |
@ TRANSMIT POWER SWITCH
[HI/LOW]
Selects high or low transmitter power.
@® CHANNEL SELECTOR
Selects an operating channel.

PANEL DESCRIPTION 2
21
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CAS
@
Mi Function display
@ CHANNEL SYSTEM INDICATORS
Indicate the selected channel system.
@® TRANSMIT INDICATOR [TX] |
Appears when transmitting.
@ LOW POWER INDICATOR [LOW] |
Appears when low power is selected
for transmitting.
@ CHANNEL INDICATOR
Displays the operating channel.
@ DUAL WATCH INDICATOR
Blinks during dual watch operation.
@ DUPLEX INDICATOR
Indicates a duplex channel in which
different frequencies are used for
transmit and receive.
@ LOW BATTERY INDICATOR
Warns of a low battery condition.
EXT sp
ly
Mi Rear panel
@ DC POWER CONNECTOR
Connects the supplied DC power
cable to an. external 12 V power
source.
@ EXTERNAL SPEAKER JACK
4 Q speaker jack.
& ANTENNA CONNECTOR
Connects an antenna with a PL-259
connector to the transceiver.

—
RECEIVING
Mi Basic operation
1) Rotate [PWR/VOL] clockwise to turn the power ON,
then adjust the volume.
e Channel 16 is displayed.
2) Rotate [SQUELCH] completely CCW; then rotate
CW until the audio noise is just muted.
Hi Channel 16
Channel 16 is an emergency, distress and call chan-
nel. Access channel 16 instantly (when [PWR] is ON)
in any of the following ways:
@) Turn power OFF; then ON again.
3) Hang the microphone on the microphone
hook.
Mi U.S.A. channels
To select a USA channel:
1) Set up the transceiver as in basic operation.
2) Push [D/MODE] once or twice until “USA” appears
in the function display.
D/MODE 3) Rotate the channel selector to set your desired
channel. |
Mi international channels
To select an international channel:
1) Set up the transceiver as in basic operation.
2) Push [D/MODE] once or twice until “INT” appears in
the function display.
D/MODE 3) Rotate the channel selector to select your desired
channel.

Mi Weather channels
To select a weather channel:
1) Set up the transceiver as in basic operation.
2) Push [WX].
e “WX” appears in the function display.
f
3) Rotate the channel selector to set your desired
channel.
(MH, NUM BER ff MAD
wwe | seeawo [wer | tases
[lowers [wet so
Hi Dual watch
NOTE: Weather
channels can be
received only.
The dual watch function monitors Channel 16 every 2
sec. while you use another channel.
1) Select the desired operating channel.
| @e When Channel 16 is selected, dual watch will not
activate.
2) Rotate [SQUELCH] until the audio noise disap-
pears.
3) Push [DUAL] to start the dual watch function.
DUAL
e
“DUAL”
blinks
in
the
function
display.
e
When
a
signal
is
received
on
Channel
16,
dual
watch
stops on Channel 16 until the signal disappears.
4) Push [DUAL] again to cancel the dual watch func-
tion.

TRANSMITTING 4
Mi Transmitter operation
1) Select the operating channel. See RECEIVING.
Push and hold e Weather channels cannot be transmitted.
_(PTT] —\
2) Push [HI/LO] to select transmit power.
e “LOW” appears when low power is selected.
3) Push and hold [PTT] to transmit.
e “TX” appears in the function display.
e DO NOT speak into the microphone too loudly or
the audio will be distorted.
« © The time-out timer function automatically returns the
transceiver to receive after 3 min. of continuous
transmission.
“TX” appears
4) Release [PTT] to receive.
i Call procedures
1) Give your call sign (or vessel name and li- _
censee) at the beginning of each transmission.
2) Give your call sign at the end of each trans-
mission that lasts more than 3 min.
3) For long ship-to-shore calls, you must give your
call sign at least once every 15 min.
4) Keep unanswered calls short (less than 30 sec.).
Wait 2 min. before repeating the call.
Mi Transmitter restrictions

__
a 5 ADDITIONAL FEATURES
i Dimmer
The function display backlighting can be turned OFF
and ON with the DIMMER [DIM] switch.
Push [DIM] to turn the backlighting ON or OFF.
Mi Low battery indicator
A small ”b” appears in the function display warning
of a low battery condition. When this happens,
check the dynamo of your boat as well as your
battery and connections. The battery may need to
be replaced.

Mi Troubleshooting
e Power connector has a poor
contact.
e Blown fuse.
e [SQUELCH] is turned too far
clockwise.
e An external speaker or cable
is broken.
e [SQUELCH] is turned too far
clockwise.
e Antenna feedline is cut or
short-circuited.
e Bad connection at the anten-
na connector. |
e No power
e Check connector pin.
e Replace the fuse.
e Rotate [SQUELCH] counter-
clockwise.
e Unplug the external speaker
jack.
e Rotate [SQUELCH] counter-
clockwise.
e Check the feedline and correct
if necessary.
e Check the antenna connector
and clean the center conductor.
e No sound from the
speaker.
e Sensitivity is low and
only strong signals
are audible.
e Transmission is restricted on e See “ Transmitter restrictions.”
some channels.
e A weather channel is se-
lected.
e Displayed channel e Channel 16 is selected. e Push [D/MODE] or [WX].
does not change. |
e Dual watch does not e Channel 16 is displayed. e Push [D/MODE] or [WX]; then
function. | push [DUAL].
li Fuse replacement
¢ Cannot transmit at
high power or at all.
e Push [D/MODE] or [CH16].
Two fuses are installed in the DC power cable. If the fuses
blow or the transceiver stops functioning, locate the source
of the problem and replace the damaged fuses with new,
rated ones. (10A)

MAINTENANCE AND CONNECTIONS 6 Hi
Hi Connections
Microphone : Rear panel
To
Attach to a
chassis ground
NEVER use a 24 V battery External speaker
e AVOID long cable runs to the antenna and power
source.
e KEEP these cables as far away as possible from
electric pumps, generators and other electronic instru-
ments. |
e Antennas and antenna placement are very impor-
tant. Ask your lcom Dealer for recommendations.
OPTIONS
e HS-57 HANDSET KIT e SP-10 EXTERNAL SPEAKER
Facilitates clear voice communication. Input impedance: 4Q
Max. input power: 5 W
e MB-28 FLUSH MOUNT
For mounting the IC-M57 to a panel. e SP-5 EXTERNAL SPEAKER ©
Input impedance: 4Q

i =Count on us!
A-5197S-1US
Printed in Japan
Copyright © 1992 by Icom Inc.
Icom Inc.
6-9-16, Kamihigashi, Hirano-ku, Osaka 547, Japan