Icom IC-M9 Instruction Manual page 13

BASIC OPERATION 3
HE Lock function
This function electronically locks all keys and switches to
prevent accidental frequency changes and function access.
1) While pushing [HI/LOW], push
[LIGHT/LOCK].
e Only [PTT], [Hi/LOW] and [LIGHT]
are functional.
e Push [16] to cancel the lock func-
tion and select channel 16.
appears
2) To cancel the function, repeat step 1 above.
e "LOCK" disappears from the function display.
Function display backlighting‫‏‬ ‫آل‬
This is convenient for nighttime operation.
1) Push [LIGHT/LOCK] to turn the function display back-
lighting ON.
e The backlighting automatically turns OFF after 5 sec. if no
other keys or switches are pushed during that time.
e To conserve battery power, use the backlighting only when
necessary.
2) To turn the function display backlighting OFF before 5
sec. have elapsed, push [LIGHT/LOCK] again.
H Transmitting
CAUTION: Transmitting without an antenna may
damage the transceiver.
Set the transceiver as for receiving, then:
1) Set the desired channel using the channel selector.
2) Push [HI/LOW] to select the output power.
e "LOW" appears when low power is selected.
e Choose low power to conserve battery power; choose high
power for longer distance communications.
3) Push and hold [PTT] to transmit.
e [TX] lights up in red.
e Some channels are for low power output only. (See channel
list, p. 18).
e To ensure privacy, use the voice scrambler function when
transmitting. An optional UT-79 must be installed.
4) Speak into the microphone.
DO NOT hold the transceiver too closely to your mouth or‫‏‬ ‫ه‬
speak too loudly. This may distort the signal.‫‏‬
5) Release [PTT] to receive.