Receive Adjustments - Icom IC-F4261DT Service Manual

RECEIVE ADJUSTMENTS

1) Select an adjustment item using [↑]/[↓] on the PC's keyboard.
2) Set or modify the adjustment value as specifi ed using [←]/[→] on the PC's keyboard, and then push [ENTER].
TRANSCEIVER'S
ADJUSTMENT
RX SENSITIVITY 1 NOTE: When "RX SENSITIVITY" is re-adjusted, "S-METER" must be re-adjusted too.
• Channel
• Receiving
S-METER 1 NOTE: "RX SENSITIVITY" must be adjusted before "S-METER." And when "RX SENSITIVITY" is re-
(S3 level setting)
• Channel
• Receiving
(S1 level setting) 2
SQUELCH 1 • Channel
• Receiving
†
; The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
*; [Low band] **; [High band]
CONDITION
: 1-26 1) Connect an SSG to the antenna con-
nector and set it as;
Frequency : 400.000 MHz*
Level
Modulation : 1 kHz
Deviation
2) Push [ENTER] to store the value.
adjusted, "S-METER" must be re-adjusted too.
: 1-27 1) Connect an SSG to the antenna con-
nector and set it as;
Frequency : 400.000 MHz*
Level
Modulation : 1 kHz
Deviation
2) Push [ENTER] to store the value.
1) Set the SSG as;
Level
2) Push [ENTER] to store the value.
: 1-28 1) Connect an SSG to the antenna con-
nector and set it as;
Frequency : 400.000 MHz*
Level
Modulation : 1 kHz
Deviation
2) Once close the squelch by increasing the
[SQL] value, and then decrease the value
to open the squelch.
3) Push [ENTER] to store the value.
***; [350 MHz band]
OPERATION
450.000 MHz**
350.000 MHz***
†
: +20 dBµ (–87 dBm)
: ±1.5 kHz
450.000 MHz**
350.000 MHz***
†
: +23 dBµ (–84 dBm)
: ±1.5 kHz
†
: –7 dBµ (–114 dBm)
450.000 MHz**
350.000 MHz***
†
: –14 dBµ (–121 dBm)
: ±1.5 kHz
5 - 7
ADJUSTMENT
VALUE
ITEM
Push [ENTER]
(Automatic ad-
justment)
[BPF C ALL]
Push [ENTER]
(Automatic ad-
justment)
[RSSI]
Push [ENTER]
(Automatic ad-
justment)
Squelch open
[SQL]