Icom IC-A25N Service Manual page 8

March 2019
The underlined parts have been updated from the previous version of the addendum, or the original page.
4-3 RECEIVE ADJUSTMENTS
1. Select an adjustment item by pushing [▲]/[▼].
2. Set or modify the adjustment value as specified by rotating [DIAL], and then push [ENT].
ADJUSTMENT
ADJUSTMENT
NO.
RECEIVE 044
1
SENSITIVITY
- AM -
045
2
046
3
- FM - 047
4
048
5
SQUELCH 050
1
LEVEL
- Wide -
051
2
052
3
053
4
- Narrow - 5 054
6 055
7 056
8 057
- FM - 058
9
059
10
060
11
061
12
VOR 0° 063
1
(Only for IC-A25N)
2nd LO 066
1
FREQUENCY
The output level of the standard signal generator (SSG) is measured at the load end (PD).
†
(Replacement page)
TRANSCEIVER'S
ITEM
CONDITION
NAME
BPF1
• Frequency:
IC-A25N:
IC-A25C:
• Receiving
BPF2
• Frequency: 127.500 MHz
• Receiving
BPF3
• Frequency: 136.975 MHz
• Receiving
BPF4
• Frequency: 161.650 MHz
• Receiving
BPF5
• Frequency: 163.275 MHz
• Receiving
WSO_S
• Frequency: 118.025 MHz
• Receiving
WSC_S
WSO_T
WSC_T
NSO_S • Frequency: 118.030 MHz
• Receiving
NSC_S
NSO_T
NSC_T
SO_S
• Frequency: 162.550 MHz
• Receiving
SC_S
SO_T
SC_T
VOR0
• Frequency: 108.000 MHz
• Receiving
LO
• Frequency: 127.510 MHz
• Receiving
Connect the SSG to the antenna
108.025 MHz connector, and set it to:
118.025 MHz Frequency:
IC-A25N:
IC-A25C:
Modulation:
Level:
Set the SSG to:
Frequency:
Level:
Set the SSG to:
Frequency:
Set the SSG to:
Frequency:
Set the SSG to:
Frequency:
Connect the SSG to the antenna
connector, and set it to:
Frequency:
Modulation:
Level:
Set the SSG to:
Level:
Set the SSG to:
Level:
Set the SSG to:
Level:
Set the SSG to:
Level:
Set the SSG to:
Level:
Set the SSG to:
Level:
Set the SSG to:
Level:
Set the SSG to:
Frequency:
Level:
Set the SSG to:
Level:
Set the SSG to:
Level:
Set the SSG to:
Level:
Connect the VOR tester to the
antenna connector, and set it to:
Frequency:
Level:
Modulation:
Bearing:
Connect the SSG to the antenna
connector, and set it to:
Frequency:
Modulation:
Level:
4-6a
OPERATION
108.025 MHz
118.025 MHz
None
+10 dBμ (−97 dBm)
†
127.500 MHz
+5 dBμ (−102 dBm)
†
136.975 MHz
161.650 MHz
163.275 MHz
118.025 MHz
None
−10 dBμ (−117 dBm)
†
−13 dBμ (−120 dBm)
†
+13 dBμ (−94 dBm)
†
+10 dBμ (−97 dBm)
†
−10 dBμ (−117 dBm)
†
−13 dBμ (−120 dBm)
†
+13 dBμ (−94 dBm)
†
+10 dBμ (−97 dBm)
†
162.550 MHz
−10 dBμ (−117 dBm)
†
−13 dBμ (−120 dBm)
†
+13 dBμ (−94 dBm)
†
+10 dBμ (−97 dBm)
†
108.000 MHz
+47 dBμ (−60 dBm)
†
30 Hz 30%
9960 Hz 30%
0°
127.50833 MHz
None
+90 dBμ (−17 dBm)
†
VALUE
Push [ENT]
(Automatic
adjustment)
Push [ENT]
(Automatic
adjustment)
Push [ENT]
(Automatic
adjustment)
Push [ENT]
(Automatic
adjustment)