Icom IC-A22 Service Manual

ADJUSTMENT ADJUSTMENT CONDITIONS
MEASUREMENT
VALUE
ADJUSTMENT
POINT
UNIT LOCATION UNIT ADJUST
SENSITIVITY 1 •
•
•
Displayed frequency

: 118.025 MHz
Connect the SSG to the antenna con-
nector and set as;
Frequency : 118.025 MHz
Level : 0 dBµ*
(–107 dBm)
Modulation : AM, 1 kHz, 30%
Receiving
Top
pannel
Connect the AC mil-
livoltmeter with an 8
Ω
dummy load to the
[SP] jack.
Maximum audio
output
RF L4008–
L4011
(Repeat
two times)
2•
•
Displayed frequency : 136.975 MHz
Set the SSG as;
Frequency : 136.975 MHz
R4068,
L4012
WEATHER
CHANNEL
SENSITIVITY
(USA version
only)
1•
•
•
•
Displayed frequency : 162.550 MHz
Weather ch. : 01
Connect the SSG to the antenna con-
nector and set as;
Frequency : 162.550 MHz
Level : 0.56 µV*
(–112 dBm)
FM deviation : ±3.5 kHz
Modulation : 1 kHz
Receiving
Top
pannel
Connect the distortion
meter to the [SP] jack.
Minimum dis-
tortion
RF R4067
SQUELCH 1 •
•
•
•
Displayed frequency : 118.025 MHz
Connect the SSG to the antenna con-
nector and set as;
Frequency : 118.025 MHz
Level : 2.0 µV*
(–101 dBm)
Modulation : AM, 1 kHz, 30%
[SQL] control : Max.counter-
clockwise
Receiving
Top
pannel
Speaker Squelch just
closes
MAIN R5114
VOR
(IC-A22/E only)
1•
•
•
•
•
•
While pushing [1] and [9], turn power
ON to enter the VOR setting mode.
Displayed frequency : 113.000 MHz
Connect the SSG to the antenna con-
nector and set as;
Frequency : 113.000 MHz
Level : 0.22 mV*
(–60 dBm)
Modulation : 9960 Hz, 30%
30 Hz, 30%
Bearing : "FROM, 90°"
R6150 : Center
Receiving
Top
pannel
Function display "FROM, 90°" ±3° LOGIC R6151
2 "FROM, 90°" R6150
3 • set the SSG as;
Level : 7.1 µV*
(–90 dBm)
Modulation : 9960 Hz, 10%
[#06] only
9960 Hz, 15%
Except [#06]
30 Hz, 30%
Course indi-
cator just ap-
pears.
R6135
4 - 3
4-2 RECEIVER ADJUSTMENT
*This output level of the standard signal generator (SSG) is indicated as SSG's open circuit.

Icom IC-A22 Specifications

General

Brand	Icom
Model	IC-A22
Category	Transceiver
Language	English