Satellite Radio User Manual

115
A weak signal may not provide a reliable PL signal. If PL is on, this can cause the audio
switches to mute the weak audio. The receive unqualify delay should be set to prevent
this from happening, while still providing the protection from passing grunge or
undesirable keying of the transmitter.
If the audio from the receiver is not squelched, a long squelch tail will be heard between
the loss of carrier and the receiver unqualify delay timeout. There is an option to shut off
the audio switch immediately on loss of carrier (squelch mute), to prevent this. Its
undesireable side effect is that if the COR is not sufficiently sensitive, it may cut off the
audio of a weak signal during fades. This option may be selected independently for
each receiver.