Lectrosonics UCR401 - Manual (Page 22)

UCR401
LECTROSONICS, INC. 22
Pilot Tone Bypass
Some wireless equipment uses a supersonic “pilot tone”
to control the squelch (audio mute) of a receiver module
to keep it silent until a valid signal is received. When a
signal with the correct pilot tone is received, the squelch
opens and audio is delivered to the output. Pilot tone
squelch control also eliminates transients (clicks and
pops) when transmitters are turned on and off. Pilot
tone is supported in the Digital Hybrid compatibility
modes for those systems that use it.
Pilot tone control can be bypassed as a diagnostic tool.
Bypass opens the audio output of the receiver uncondi-
tionally, allowing you to listen to any signals entering the
receiver to help identify their source. Pilot tone bypass
will also allow you to use a transmitter that has a defec-
tive pilot tone circuit.
CAUTION: When pilot tone is bypassed and
the transmitter is turned off, excessive noise
will be present. Turn the audio level down
before bypassing pilot tone.