two source audio

Audacity 2.3.0
Windows 7

I am ham radio operator. I have a flex SDR radio. I am trying to compare the signal quality of two different antennas. The radio operating program has ability to define where there audio is output. I want the receive audio from DAX1(digital audio exchange) to record on channel 1 and DAX2 to record on channel 2 simultaneously. I need too be able to run two instances of audacity or I need to be able to record stereo with channel one coming from one source and channel 2 coming from a different source. Is there anyway to do this