5 - 4
*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.
5-4 RECEIVER ADJUSTMENTS
SENSITIVITY
SQUELCH
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1
1
• Operating channel : ch16
• [SQUELCH] control :
Max. counterclockwise
• Set the internal speaker OFF in
the SET mode, and connect a
distortion meter with a 4
Ω
load to
[EXT SP] receptacle.
• Connect an SSG to the antenna
connector and set as:
Frequency
: 156.800 MHz
Level
: 10 µV*
(–97 dBm)
Modulation
: 1 kHz
Deviation
: ±3.5 kHz
• Receiving
• Operating channel : ch16
• [SQUELCH] control :
Max. counterclockwise
• Connect an SSG to the antenna
connector and set as:
Frequency
: 156.800 MHz
Level
: 0.18 µV*
(–122 dBm)
Modulation
: 1 kHz
Deviation
: ±3.5 kHz
• Receiving
MAIN
MAIN
Connect a DC volt-
meter to check point
CP3.
Connect a DC volt-
meter to check point
CP5.
Maximum voltage
2 V
MAIN
MAIN
L1,
L2,
L3,
L4
,
R33
Receive sensitivity
adjustment
L4
L3
L2
L1
Squelch check point
CP5
Squelch
adjustment
R33
Receive sensitivity
check point
CP3