Thanks for the reply Roger!
Well, I am not a computer tech. Finally figured out that win 10 drivers would work and there is driver loading software in the 64 bit H4 zip file. I upgraded to DIslords
v .1.0.71. Got the H4 talking to NanoVNA Saver and NANOVNA on my tablet.
Calibration works using commercial standards. Matches my home made standards very closely. I do mostly HF with Some VHF and UHF. I have not checked my Home made standards at VHF or UHF yet.
Unable to get the SD memory card to work. Memory chips are probably too new and too large at 32 GB. My H4 platform is STM32F303xC Analog and DSP. TCXO is 26 MHz.
Many thanks to all that made this wonderful piece of test equipment possible!
Alton, NU8L
