Sennheiser EK 300 IEM Specifications download pdf (Page 33)

Squelch

Pilot tone squelch

When the transmitter is set to stereo operation, it adds a 19-kHz pilot tone

to the audio signal. The receiver checks incoming audio signals to see if the

pilot tone is present. In the absence of the 19-kHz signal, the receiver’s audio

output will remain muted, even if a strong RF signal is present.

This prevents strong interfering signals from causing hissing noise in the

receiver when the transmitter is switched off.

Field strength-dependent squelch

Depending on the strength of the received RF signal, the receiver’s audio

output is opened or muted. Via the “SQELCH” menu of the receiver, the

squelch threshold can be adjusted in three steps (LO, MID, HI).

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Sennheiser EK 300 IEM Specifications Page 33