30
3
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
■
RF gain and Squelch
■
Meter function
The
[RF/SQL]
control adjusts the RF gain and
squelch threshold level. The squelch stops noise out-
put from the speaker (closed position) when no sig-
nal is received.
• 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. 75). See the table
as below.
MODE
SET MODE SETTING
AUTO
SQL
RF + SQL
SSB, CW
RTTY
RF GAIN
SQL
RF GAIN + SQL
AM
SQL
SQL
RF GAIN + SQL
❍
Adjusting 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 posi-
tion for maximum sensitivity.
• Rotate the
[RF/SQL]
control clockwise to increase, coun-
terclockwise to decrease the receiver sensitivity.
• The S-meter indicates receive sensitivity.
❍
Adjusting 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-me-
ter squelch level.
MODE
TUNER
TS
FILTER
SPCH
V/M
A/B
SPLIT
M-CL
SCAN
SET
ATT
P.AMP
COMP
VOX
MNF
RIT
1
2
3
4
5
6
7
8
0
50
28
18
14
10
21
24
=
7
3.5
1.8
F-INP
M-CH/RIT
ENT
BAND
GENE
9
.
AGC
MW
ANF
METER
NR
NB
[RF/SQL]
Minimum RF gain
Adjustable range
RF gain adjustable
range
Maximum RF gain
Maximum RF gain
Squelch is open.
S-meter squelch
S-meter squelch
threshold
Squelch is open.
S-meter squelch
S-meter squelch
threshold
• When functioning as RF GAIN/SQL control
• When functioning as RF GAIN control
• When functioning as SQL control
Lowest Threshold
Highest Threshold
The transceiver has 3 transmit meter functions for
your convenience. Select the desired meter from RF
power (Po), ALC and SWR.
MODE
TUNER
TS
FILTER
SPCH
V/M
A/B
SPLIT
M-CL
SCAN
SET
ATT
P.AMP
COMP
VOX
MNF
RIT
1
2
3
4
5
6
7
8
0
50
28
18
14
10
21
24
=
7
3.5
1.8
F-INP
M-CH/RIT
ENT
BAND
GENE
9
.
AGC
MW
ANF
METER
NR
NB
➥
Push and hold
ANF
METER
for 1 sec. to toggle between
RF power (Po), SWR and ALC.
• The display indication changes as the following table.
DISPLAY
INDICATION
MEASUREMENT
Po
Indicates the relative RF output power.
SWR
Indicates the SWR on the transmission line.
ALC
Indicates the ALC level. When the meter
movement shows the input signal level
exceeds the allowable level, the ALC lim-
its the RF power. In such cases, reduce
the MIC gain setting (see p. 31) in the
quick set mode.