Adjusting The Audio Volume; Using Rf Gain And Squelch Control - Icom IC-7200 Instruction Manual
Hf/50 mhz transceiver
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Also See for IC-7200:
- Service manual (135 pages) ,
- Advanced instructions (127 pages) ,
- Instruction manual (104 pages)
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3
OPERATION
■
Adjusting the audio volume
Rotate the [AF] control clockwise to increase the au-
dio output level; counterclockwise to decrease it.
• Set a suitable audio level.
[AF]
■
Using RF gain and Squelch control
The [RF/SQL] control adjusts the RF gain and squelch
threshold level. The squelch stops noise output from
the speaker (closed position) when no signal is re-
ceived.
• The 12 o'clock position is recommended for any setting of
the [RF/SQL] control.
• The [RF/SQL] control can be set as the RF gain control
only (squelch is fixed open) or squelch control (RF gain is
fixed at maximum) in the Set mode (p. 29).
MODE
AUTO
SSB, CW
RF GAIN
RTTY
SQL
AM
❍ Adjusting the RF gain (Receive sensitivity)
Normally, the [RF/SQL] control is set to the 12 o'clock
position.
Rotate the [RF/SQL] control to the 11 o'clock position
for maximum sensitivity.
• Rotate the [RF/SQL] control clockwise to increase the re-
ceiver sensitivity, counterclockwise to decrease it.
• The S-meter indicates receive sensitivity.
❍ Adjusting the squelch (Removing non-signal noise)
Rotate the [RF/SQL] control to the 1 o'clock posi-
tion to invoke the S-meter squelch— this allows you
to set the minimum signal level needed to open the
squelch.
• A segment appears in the S-meter to indicate the S-meter
squelch level.
17
NR
ANF
NB
METER
1
A/B
2
3
V/M
SPLIT
=
1.8
3.5
7
4
5
6
MW
M-CL
AGC
10
14
18
7
8
9
COMP
SCAN
VOX
21
24
28
.
MODE
TS
0
F-INP
ENT
RIT
MNF
GENE
50
BAND
TUNER
FILTER
P.AMP
ATT
M-CH/RIT
SPCH
SET
SET MODE SETTING
SQL
RF + SQL
SQL
RF GAIN + SQL
SQL
RF GAIN + SQL
Audio output
decreases
MODE
TS
TUNER
FILTER
SPCH
[RF/SQL]
• When functioning as an RF GAIN/SQL control
Squelch is open.
RF gain adjustable
range
• When functioning as an RF GAIN control
Maximum RF gain
Adjustable range
Minimum RF gain
• When functioning as a SQL control
Squelch is open.
Lowest Threshold
Audio output
increases
NB
NR
ANF
METER
V/M
1
A/B
2
3
SPLIT
=
3.5
7
1.8
4
5
6
MW
M-CL
AGC
10
14
18
7
8
9
COMP
SCAN
VOX
21
24
28
.
0
F-INP
ENT
RIT
MNF
GENE
50
BAND
P.AMP
ATT
M-CH/RIT
SET
S-meter squelch
threshold
Maximum RF gain
S-meter squelch
S-meter squelch
threshold
S-meter squelch
Highest Threshold
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