Use digital modes

Radio Bench 0.9 supports RADE V1 digital voice receive and transmit. The mode selector shows its controls.

Digital voice

RADE (Radio Autoencoder) was originally created by Jean-Marc Valin and David Rowe as part of the FreeDV project. Radio Bench does not develop the RADE codec or waveform. Developing paths are labelled experimental.

Use the mode passband that Radio Bench supplies. Confirm audio-device and transmit settings before on-air tests.

Receive signal quality

In RADV1 mode, the SNR meter below SDR RX shows the modem's signal-to-noise estimate. It uses the same visibility setting as the SDR signal meter. The reading clears when the modem loses sync and is inactive while stopped or transmitting.

Ending a transmission

On a normal RADE transmit release, Radio Bench finishes queued speech and the end-of-transmission signal before releasing PTT. Faults and disconnections still stop transmission immediately.

Version note

FT8 and FT4 are included from 0.9.0-beta.1. See the FSK operating guide for station setup, supervised exchanges and logging.

Experimental status means that behavior can change within the 0.9 family. Keep logs of test conditions when you report a problem.