Thanks, Kent.
I'm more interested in using signals through air.
The front-end of the LiteVNA was described here:
/g/liteVNA/topic/99749985#msg1054I see I made a mistake in my 1st post. The liteVNA doesn't use a similar DSP to the nanoVNA but uses the uP's internal DSP and several switches.
However, all the switches can be statically set: reflect=open, Rx/tx synth set to ADF4350, rcv & ecal connected to ports.
Then control Tx & Rx from external controller.
