Frequency Adjustment - Icom IC-M304 Service Manual

5-2 FREQUENCY ADJUSTMENT

ADJUSTMENT
LOCK 1 • Channel
VOLTAGE • Receiving
(Verify)
2 • Channel
• Output power : Low
• Connect a power meter to the ant-
enna connector.
• Transmitting
REFERENCE 1 • Channel
FREQUENCY • Output power : Low
• Connect a power meter to the ant-
enna connector.
• Transmitting
• ADJUST&CHECK POINTS LOCATION (FREQUENCY)
ADJUSTMENT
CONDITION
: CH16 (156.800 MHz)
: CH16 (156.800 MHz)
: CH16 (156.800 MHz)
C57 (REF)
RECEIVE SENSITIVITY
ADJUSTMENT POINT
OPERATION
Connect a DC voltmeter to the check point 'LV.'
1) Loosely couple a frequency counter to the ant-
enna connector.
2) Adjust C257 (REF).
"LV"
LOCK VOLTAGE
CHECK POINT
5 - 2
VALUE
1.3–2.3 V
(Verify)
1.4–2.4 V
(Verify)
156.800 MHz