Yaesu FT-2800M, Руководство по эксплуатации

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20 FT-2800M O
PERATING
M
ANUAL
RF S
QUELCH
A special RF Squelch feature is provided on this radio. This feature allows you to set the
squelch so that only signals exceeding a certain S-meter level will open the squelch.
To set up the RF squelch circuit for operation, use the following procedure:
1. Press and hold in the [
MHz ( SET )] key for one second, then rotate the DIAL
knob to
select “
20 RF SQL
.”
2. Press the [ MHz
(
SET
)] key, then rotate the
DIAL knob to select the desired signal strength
level for the squelch threshold (
1
-
10
or
OFF
).
3. Press and hold in the [ MHz
(
SET
)] key for one second to save your new setting and exit
to normal operation.
The receiver’s squelch will open based on the highest level set by the two squelch
system “Noise Squelch and RF Squelch). For example:
1) If the Noise Squelch (SQL control) is set so that signals at a level of S-3 will open the
squelch, but the RF Squelch (Menu #20) is set to “S-9,” the squelch will only open on
signals which are S-9 or stronger on the S-meter.
2) If the RF Squelch is set to “S-3,” but the Noise Squelch is set to a high level which will
only pass signals which are Full Scale on the S-meter, the squelch will only open on
signals which are Full Scale on the S-meter. In this case, the Noise Squelch overrides the
action of the RF Squelch.
A
DVANCED
O
PERATION