Icom IC-4088S Instruction Manual page 7

q EXTERNAL SPEAKER AND MICROPHONE JACKS
Connect an optional speaker-microphone or headset, if desired.
w VOLUME CONTROL [VOL]
Rotate clockwise to increase and counterclockwise to decrease
volume.
e PTT SWITCH [PTT]
Push and hold to transmit; release to receive.
r MODE SWITCH [MODE]
➥ Push to enter and select set mode for group (p. 14) and voice
scrambler code. (p. 17)
➥ Push and hold for 1 sec. to turn the monitor function ON and
OFF. (p. 8)
t CHANNEL UP SWITCH [Y]
➥ Push to increment the operating channel.
➥ Push and hold to increment the operating channel continu-
ously.
➥ While scanning, changes scanning direction. (p. 13)
y CHANNEL DOWN SWITCH [Z]
➥ Push to decrement the operating channel.
➥ Push and hold to decrement the operating channel continu-
ously.
➥ While scanning, changes scanning direction. (p. 13)
u POWER SWITCH [PWR]
➥ Push to turn the power ON.
➥ Push to switch between repeater and simplex operation.
(p. 12)
➥ Push and hold this key to toggle the key lock function
ON/OFF. (p. 20)
i EXTERNAL DC IN JACK [DC 6V] (p. 6)
Connects the AC adapter or DC power cable for battery charg-
ing.
PANEL DESCRIPTION
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