Icom IC-M502 Service Manual

5-3 TRANSMITTER ADJUSTMENTS
5 - 3
OUTPUT
POWER
FREQUENCY
DEVIATION
ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT LOCATION UNIT ADJUST
1
1
• Operating channel : ch16
• Output power : High
• Transmitting
• Operating channel : ch16
• Output power : Low
• Connect an audio generator to J7
(pin 5) with an AC millivoltmeter
and set as:
Frequency : 1 kHz
Level : 70 mV
• Set an FM deviation meter as:
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector : (P–P)/2
• Transmitting
Rear
Panel
Rear
Panel
Connect an RF
power meter to the
antenna connector.
Connect an FM
deviation meter to
the antenna con-
nector through an
attenuator.
25 W
±4.3 kHz
MAIN
MAIN
R84
R172
Output power
adjustment
R84
Frequency deviation
adjustment
R172
–
+
[PTT]
J7
1
8
Audio generator
300 Hz to 3 kHz
AC millivoltmeter
2–200 mV

Icom IC-M502 Specifications

General

Brand	Icom
Model	IC-M502
Category	Transceiver
Language	English