The receiver shows a deflection in the AF audio level (audio frequency)

The receiver is receiving audio signals from a transmitter that uses the same frequency.
- Select another frequency.
- Perform the frequency test again.
The receiver does not show a deflection in the AF audio level (audio frequency):
The receiver is not receiving any audio signals. This frequency is not used by another transmitter.
- Make sure that no RF signal level is displayed.
- Synchronize the selected frequency with the transmitter and perform a soundcheck (Performing a soundcheck).
