Icom 43191510, Service Manual, Page: 8 / 90

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