Service Manual

30
Item Condition Test Equipment Parts Method
Specification/
Remarks
Rotate to CH8.
Low frequency
Rx Sensitivity
(bandpass)
Short press
PTT to switch
other
frequencies.
Radio
communication
test set
SSG:-119dB
MOD:1KHz
DEV:3.0KHz
Filter: 0.3-3KHz
Antenna
Remote
speaker MIC
jack
SK1
SK2
Check whether
SINAD is within the
range and whether to
get SINAD≥12dB by
adjusting SK1 or SK2.
Rotate the channel
selector knob to save
after the five-point
adjustment is
completed.
Adjust the
volume control
knob to the
right place,
which will not
limit the output.
SINAD≥12dB
Wide
Rotate to CH2
and SQL is set
to level 5 ON.
Press SK1 or
SK2 to enable
the function.
The channel
spacing is wide
band.
Low frequency
Short press
PTT to switch
frequencies.
Adjust the output
signals of SSG to the
squelch level. Rotate
the channel selector
knob to save after the
five-point adjustment
is completed.
SQL level:
-119±1dB
SQL
ON
Narrow
Long press
PTT (≥1.5s) to
enter narrow
band. Press
SK1 or SK2 to
enable this
function. Short
press PTT to
switch
frequencies.
Radio
communication
test set
SSG:-119dB
MOD:1KHz
DEV:1.5KHz
Filter: 0.3-3KHz
Antenna
Remote
speaker MIC
jack
SK1
SK2
Adjust the output
signals of SSG to the
squelch level. Rotate
the channel selector
knob to save after the
five-point adjustment
is completed.
SQL level:
-118±1dB