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BASIC OPERATION
q Rotate [VOL] clockwise to turn power ON.
w Use 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)
e Push [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.
- 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.
y Push 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.
■ Receiving and transmitting
CAUTION: Transmitting without an antenna may
damage the transceiver.
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.
r Set channel
w Opening the
squelch
q Power ON
e Set volume
t Set output
power
y Push and
hold to
transmit
u Release to
receive
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