Receiver Adjustments - Icom IC-M602 Service Manual

5-3 RECEIVER ADJUSTMENTS

ADJUSTMENT ADJUSTMENT CONDITION
SENSITIVITY 1 • Operating channel : ch 16
(Except • Connect a tracking generator's
output to the antenna connector
channel 70)
and set as:
Level
(Channel 70) 2 • Operating channel : ch 16
• Connect an SSG to the antenna
connector and set as:
Frequency
Level
Modulation
Deviation
• Set the internal speaker OFF in
the SET mode, and connect a
distortion meter with a 4 Ω load to
[EXT SP] receptacle.
• Receiving
*This output level of a standard signal generator (SSG) is indicated as SSG's open circuit.
MEASUREMENT
UNIT
MAIN Connect a tracking
generator's input to
the MAIN unit; J3.
: 7.1 mV*
(–30 dBm)
MAIN Connect a DC volt-
meter to check point
CP3.
: 156.800 MHz
: 10 µV*
(–97 dBm)
: 1 kHz
: ±3.5 kHz
5 - 3
VALUE
LOCATION
Set the flat wave
form as shown below.
Set to flat wave form
155 MHz
Maximum voltage
ADJUSTMENT
POINT
UNIT ADJUST
MAIN L11
L12
L13
L14
L15
165 MHz
MAIN L31
L32
L33
L34