ICOM 298700 用户手册

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页码 36
12
4
BASIC OPERATION
■ Adjusting the squelch level
To adjust the IC-M34’s squelch level, use the [
Y]/[Zkeys as
desired below. In order to receive signals properly, as well as
for the scan to function effectively, the squelch must be ad-
justed to the proper level.
q Push [SQL], then adjust the squelch level with [Y]/[Z].
• “SQL” indicator starts blinking.
• There are 11 squelch levels to choose from: OP is completely
open; 10 is tight squelch; 1 is loose squelch level.
• When no key is pushed for 5 sec., the transceiver returns to nor-
mal condition.
w Push [SQL] again to return to normal condition.
■ Lock function
This function electronically locks all keys (except for [PTT],
[SQL•MONI][VOL•MUTE][H/L•LOCK] and [
Y]/[Z]*) to
prevent accidental channel changes and function access.
➥ Push and hold [LOCK] (H/L) for 1 sec. to turn the lock
function ON and OFF.
* Activates after pushing [VOL] or [SQL] only.
■ Automatic backlighting
This function is convenient for nighttime operation. The auto-
matic backlighting can be activated in set mode. (p. 19)
➥ Push any key except for [PTT] to turn the backlighting ON.
• The backlighting is automatically turned OFF after 5 sec. of in-
activity.
Push and hold
for 1 sec.
Appears while the lock 
function is used.
Blinks during squelch 
level adjustment.
Indicates the 
squelch level.