User Manual

WiNRADiO G3XX User’s Manual

While both the main panel Noise Squelch and the demodulator AF Squelch

act upon the same signal, their usage is slightly different: If the main panel

Noise Squelch is set, this also automatically sets the demodulator AF Squelch.

On the other hand, when the demodulator AF Squelch is set, this does not

automatically set the main panel Noise Squelch. This is because the main

panel squelch is also used for scanning purposes, while the demodulator AF

Squelch can only mute or un-mute the audio. So, it is possible for the scanning

to be controlled by the Level Squelch, but the audio muted by the

demodulator’s AF Squelch.

Note that the noise level also depends on the IF bandwidth setting: The wider

this setting, the higher the noise level. A typical Noise Squelch value for

scanning of point to point communications is approximately 30-50%.

Next to the squelch setting is the Squelch Defeat (Def) button. When

activated, the squelch action will be turned off (it is the same as if the squelch

was set to its lowest level, but more convenient). The red segment in the S-

meter will turn blue to indicate this condition.

It is easy to forget that squelch is active. If the receiver doesn’t seem to be

operational (no sound from the speaker), check the squelch and mute settings

first.

Did you know?

Squelch can be also controlled by the signal contents. For example, the

CTCSS (Continuous Tone Coded Squelch System) is also supported by the

optional WiNRADiO Advanced Digital Suite (see www.winradio.com/ads).