WiNRADiO G305 VHF/UHF Receiver
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Squelch Control
The
Squelch control
can be used to automatically mute the receiver when no
signal is being received. The squelch serves two purposes: Firstly, without a
signal, all you will usually hear is noise, so squelch is provided to cut out the
noise until a useful signal is received, making the receiver more comfortable to
use. Secondly, when the receiver is scanning, the objective is to stop the scan
when a useful signal is found - what a “useful signal” actually means is defined
by the squelch setting.
The G305 receiver has five different types of squelch, to maximize operator
convenience and to make scanning more efficient and faster:
Level
squelch refers to the received signal strength, as it is indicated by the
S-
meter.
If the signal strength is higher than the specified threshold, the squelch
will open and the receiver will be unmuted.
Noise
squelch determines the level of noise in the received demodulated
audio
below
which the squelch will open and unmute the receiver. This is
particularly useful for the FM mode, where there is a considerable level of
noise in the absence of a useful signal. The current
Noise
value is shown in
the demodulator spectrum display if this type of squelch is enabled.
To disable the squelch action, simply disengage all squelch buttons (Level,
Noise, Voice, CTCSS and DCS).