4 BASIC OPERATION

Receiving and transmitting

CAUTION: Transmitting without an antenna may damage the transceiver.

qRotate [VOL] clockwise to turn power ON.

wUse the squelch function to mute any audio noise if necessary. After pushing the [SQL] for 1 sec., the squelch function is cut off until [SQL] is released. (default)

ePush [SQL] for 1 sec. (see the SET mode on p. 19), and rotate volume to set the audio output level.

r Push [Y]/[Z] to select the desired channel.

- When receiving a signal, “

” appears and audio is emitted

from the speaker.

 

IMPORTANT: To maximize the readability of your transmit- ted signal, pause a few sec. after pushing [PTT], hold the microphone 5 to 10 cm (2 to 4 inches) from your mouth and speak at a normal voice level.

NOTE: The transceiver has a power save function to con- serve the battery power and it cannot be turned OFF. The power save function activates automatically when no sig- nal is received for 5 sec.

For U.S.A version: To prevent accidental prolonged trans- mission, etc., the IC-M88 has a time-out timer function. This timer cuts a transmission OFF after 5 min. of continuous transmission.

- Further adjustment of [VOL] may be necessary at this point.

t Push [H/L•LOCK] to select the output power if necessary.

- “LOW” appears when low power is selected; “MID” appears

when middle 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.

yPush and hold [PTT] to transmit, then speak into the microphone.

-“TX” appears.

-Channel 70 cannot be used for transmission (for GMDSS use). u Release [PTT] to receive.

yPush and hold to transmit

uRelease to receive

wOpening the squelch

qPower ON

eSet volume

r

Set channel

t Set output

power

 

 

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Icom IC-M88 instruction manual Receiving and transmitting, Rotate VOL clockwise to turn power on