5 - 4
5-3 RECEIVER ADJUSTMENT
• The follow adjustment must be performed at the “ADJUSTMENT” mode, and turn [DIAL] to start each adjustment and finish
automatically.
RECEIVER
SENSITIVITY
SQELCH
LEVEL
VOR PHASE
(IC-A23 only)
VOR OFF
(IC-A23 only)
1
2
1
2
1
1
• Operating channel : 3 ch [BF1ADJ] (108.200 MHz)
• Connect a standard signal generator to the antenna connector and set as:
Frequency
: 108.200 MHz
Level
: 1.0 µV* (–107 dBm)
Modulation
: OFF
• Connect a external speaker (8
Ω
), AC millivoltmeter and distortion meter to the [MIC/SP]
jack.
• Receiving
Same adjustment as step 1 for following channels.
• 4 ch [BF2ADJ] (128.200 MHz)
• 5 ch [BF3ADJ] (136.800 MHz)
• 6 ch [BF4ADJ] (161.650 MHz)
NOTE: Tune the SSG’s frequency to adjustment frequencies.
• Operating channel : 7 ch [ASADJS] (118.000 MHz)
• Connect a standard signal generator to the antenna connector and set as:
Frequency
: 118.200 MHz
Level
: 0.5 µV* (–113 dBm)
Modulation
: OFF
• Receiving
Same adjustment as step 1 for following channels.
• 8 ch [ASADJT] (136.975 MHz)
• 9 ch [FSADJS] (161.650 MHz)
• 10 ch [FSADJT] (161.650 MHz)
NOTE: Tune the SSG’s frequency to adjustment frequencies.
• Operating channel : 11 ch [VORADJ] (113.000 MHz)
• Connect a standard signal generator to the antenna connector and set as:
Frequency
: 113.000 MHz
Level
: 0.22 mV* (–60 dBm)
Modulation
: 9960 Hz, 30 %
30 Hz, 30 %
Bearing
: FROM, 90˚
• Operating channel : 12 ch [OFFADJ] (113.000 MHz)
• Connect a standard signal generator to the antenna connector and set as:
Frequency
: 113.000 MHz
Level
: 7.1 µV* (–90 dBm)
Modulation
: 9960 Hz, 10 %
30 Hz, 30 %
Bearing
: FROM, 90˚
Top
panel
Top
panel
Top
panel
Top
panel
[DIAL]
[DIAL]
[DIAL]
[DIAL]
ADJUSTMENT
ADJUSTMENT CONDITIONS
UNIT
ADJUST
ADJUSTMENT
*This output level of the standard signal generator (SSG) is indicated as SSG’s open circuit.
