Audio channels

RimuDAX presents three kinds of channel. Enable the ones your software needs.

TX channel

The TX channel carries transmit audio from your Linux application to the radio.

Enable TX before you enable any RX channel.

The PulseAudio device is rimu.dax.tx. Set this as the audio output in your digital-mode software.

Mic channel

The Mic channel routes microphone audio from Linux into the radio, for voice operation over DAX.

Enable Mic when you want a Linux audio input - a headset or a USB microphone - to be the radio's transmit microphone source.

RX channels

RimuDAX provides eight receive channels, RX1 to RX8. Each one corresponds to a DAX channel number set on a slice in RimuSDR.

The numbers must match

The DAX channel number on the slice in RimuSDR must match the RX channel enabled in RimuDAX. Slice DAX channel 1 maps to RX1, channel 2 to RX2, and so on.

For example, if the slice has DAX channel 1 selected and the DAX button active, enable RX1 in RimuDAX. The PulseAudio device is rimu.dax.rx1. Set this as the audio input in your digital-mode software.

Receiver audio is separate

The system playback device for the SDR receiver audio is selected in RimuSDR, independently of the DAX audio path.