Icom IC-F21

5 - 4
C54
PLL lock voltage adjustment (RX)
TOP VIEW
RF power meter
C68
PLL lock voltage adjustment (TX)
LV
PLL lock voltage check point
5-2 PLL ADJUSTMENT
PLL LOCK
VOLTAGE
1
2
3
4
• Operating frequency:
440.000 MHz
• Receiving
• Transmitting
• Operating frequency:
470.000 MHz
• Receiving
• Transmitting
MAIN Connect a digital multi
meter to check point
LV.
1.3 V
1.3 V
2.8–4.3 V
2.8–4.3 V
MAIN C54
C68
Verify
ADJUSTMENT ADJUSTMENT CONDITIONS
UNIT LOCATION
VALUE
UNIT ADJUST
MEASUREMENT ADJUSTMENT