3-12
3
BASIC OPERATION
■ Using the RF gain and Squelch control
The dial lock function prevents accidental changes by
[DIAL] being rotated.
➥ Hold down
SPCH
for 1 second to turn the dial lock
function ON or OFF.
• “ ” appears when the dial lock function is ON.
■ Locking the Dial
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 signal
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. 10-10).
MODE
SET MODE SETTING
AUTO SQL RF + SQL
SSB, CW
RTTY
RF GAIN SQL RF GAIN + SQL
AM SQL SQL RF GAIN + SQL
❍
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.
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 an RF GAIN/SQL control
• When functioning as an RF GAIN control
• When functioning as a SQL control
Lowest Threshold Highest Threshold
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