Basic Operation/Reception
Turning the Power On/Off
Press the PWR switch momentarily to turn the radio on.
To turn the radio off, press and hold in the PWR switch for
½ second.
Supply Voltage Display
When you turn on the radio, the current DC supply voltage is indicated on the
display for one second. After this interval, the display will resume its normal
indication of the operating frequency.
To view the supply voltage at any time during opera-
tion, press the button (repeatedly, if neces-
sary) until you see the current DC supply voltage indicated on the display.
Adjusting the Volume and Squelch
At first, set the SQL control fully counter-clockwise.
Now you may rotate the VOL control clockwise to
adjust the receiver volume for a comfortable listening
level, using the background noise as a reference.
To set the squelch, turn the SQL control clockwise a slightly past the point where
the background band noise is muted. This is the point of best sensitivity to weak
signals, and we recommend that you not rotate the VOL control very much past
the point where the background noise is just silenced.
RF Squelch
A special “RF SQUELCH” feature is provided on this radio. This feature allows you
to set the squelch so that only signals exceeding a prescribed S-meter level will
open the squelch.
To set up the RF SQUELCH circuit for operation, use the following procedure:
1. Press and hold the key for one second, then rotate the MAIN DIAL knob
to select “
27RfSqL
.”
2. Press the key to select the desired signal strength level for the squelch
threshold (
S-3
,
S-5
, or
S-FULL
). The default setting is OFF.
3. Press and hold in the key for 1.5 second to save the new setting and
exit to normal operation.
4. Finally, carefully advance the SQL control to the point where the background
band noise is just silenced.
This adjustment can be set independently for each band. See the instructions re-
garding band change below.
１４５●０００
１３．８Ｖ
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