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LV
PLL lock voltage
check point
C133
PLL lock voltage
adjustment for TX
C134
PLL lock voltage
adjustment for RX
DC power supply
13.2 V / 15 A
5 - 4
5-2 PLL ADJUSTMENT
PLL LOCK
VOLTAGE
1
2
3
4
• Operating freq. : 174.000 MHz
• Receiving
• Output power
: Low1
• Transmitting
• Operating freq. : 136.000 MHz
• Receiving
• Output power
: Low1
• Transmitting
MAIN Connect a digital multi-
meter or an oscillo-
scope to the check
point, “LV”.
3.2 V
3.6 V
0.9–1.5 V
0.8–1.4 V
MAIN
C134
C133
Verify
ADJUSTMENT
ADJUSTMENT CONDITIONS
UNIT
LOCATION
VALUE
UNIT
ADJUST
MEASUREMENT
ADJUSTMENT