5
2
BASIC OPERATION
■ Squelch function
The transceiver has a noise squelch circuit to mute undesired
noise while receiving no signal.
D Setting the squelch level
q Push [SQL] to turn the level adjusting mode ON.
w Turn the tuning [DIAL] to select the squelch level.
• ‘SQ 01’ is loose squelch and ‘SQ 25’ is tight squelch. (Ini-
tial level is ‘SQ 01’)
• ‘SQ 01’ indicates that the squelch circuit is turned off.
• “” appears on the display.
e Push [SQL] to return to regular operation.
■ Side tone function
When using an optional headset, such as those from the
David Clark Co. via the OPC-871
HEAD SET ADAPTOR, the
transceiver outputs your transmitted voice to the headset for
monitoring. (p. 17)
■ LCD backlight control
The backlight of the can be set OFF, Low or High.
➥ Push [DIAL] to toggle the backlight control; OFF, Low or
High are available.
■ Dial select function
Use the dial select function to adjust the tuning behavior of
the [DIAL] keys—use 1 MHz tuning when you want to change
the frequency in large increments; use regular tuning (25 kHz
or 8.33* kHz) when you want to change the frequency in
smaller increments.
*Except USA version
q Push [V/M] to select VFO
mode.
w Push and hold [DIAL(TS)] for
1 sec. to select the desired
tuning increment.
• 1 MHz tuning or regular
tuning steps can be se-
lected. (see diagrams at
right)
e Push and hold [DIAL(TS)] for
1 sec. to return to normal op-
eration.
NOTE: Large tuning steps should be used only when you
want to change the frequency in large increments. Please
select regular tuning steps for normal operation.
1 MHz tuning selected
Regular tuning selected
