Radio Bench
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Record and replay signals

Radio Bench can record decoded audio or raw IQ samples. Both are saved as WAV files and can require substantial disk space.

Choose a recording folder

Open the RECORDING section in the left control column and select Folder. Radio Bench uses its data directory until you choose another location.

The RECORDING section of the Radio Bench control column, showing the FORMAT selector, the Audio and IQ mode chips, and the Record, Folder, and Open actions.
Recording format, mode, and actions are in the RECORDING section.

Confirm that the destination has enough free space. IQ files grow much faster than audio files.

Start a recording

  1. Start the SDR stream.
  2. Select Audio or IQ under MODE.
  3. Select WAV16 or WAV32 under FORMAT.
  4. Select Record.

Stop the recording before you close the source. Radio Bench also finalizes an active recording during a normal application shutdown.

Replay IQ

Select the IQ File source, then choose a supported stereo IQ file. Metadata can restore center frequency and sample rate.

Use playback to examine a signal again without connected hardware. Playback stops at the end of the file unless you turn on Loop Playback.