Icom IC-7400 Service Manual

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ADJUSTMENT MODE—continued
RX
ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION
• Connect an SSG to [ANT 144M]
connector and set as:
Frequency : 108.021500 MHz
Level : 3.2 µV (–97 dBm)
Modulation : OFF
• Receiving
• Set an SSG as :
Frequency : 143.981500 MHz
Level : 3.2 µV (–97 dBm)
Modulation : OFF
• Receiving
• Set an SSG as :
Frequency : 144.021500 MHz
Level : 3.2 µV (–97 dBm)
Modulation : OFF
• Receiving
• Set an SSG as :
Frequency : 173.981500 MHz
Level : 3.2 µV (–97 dBm)
Modulation : OFF
• Receiving
6
7
8
9
Push [[F5 (SET)] to tune the “BPF-
1”, and to step next.
Push [[F-5 (SET)] to tune the “BPF-
2”, and to step next.
Push [[F-5 (SET)] to tune the “BPF-
3”, and to step next.
Push [[F-5 (SET)] to tune the “BPF-
4”, and return to the opening display.
chk
SET
Tuned BPF-1
chk
SET
Tuned BPF-2
chk
SET
Tuned BPF-3
chk
SET
Tuned BPF-4
*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.

Icom IC-7400 Specifications

General

Frequency Range TX	1.8-54 MHz
Frequency Range RX	0.03-60 MHz
Modes	SSB, CW, RTTY, AM, FM
Output Power	100W (HF/50MHz), 50W (144MHz)
Receiver Type	Triple conversion superheterodyne
Antenna Connector	SO-239
IF Rejection	More than 70 dB
Supply Voltage	13.8 V DC ±15%
Current Drain RX	1.5 A
Image Rejection	More than 70 dB
Audio Output Power	2 W
Current Drain TX	20 A
Sensitivity	0.13 μV (SSB/CW)
Selectivity	SSB: 2.4 kHz