Hi Nick -
VNAR4.3 runs but cannot connect to the nanoVNA.
Getting VNAR4.3 connected to nanoVNA is tricky even on Windows
What baud rate, # of bits, parity, # of stop bits does VNAR4.3 assume?
Thpse settings do not affect communication to nanoVNA.
Has anyone used VNAR4.3 with nanoVNA on Windows XP?