I purchased a NanoVNA off of Amazon. Seem to work when I got it, but then when I tried to calibrate it I'm able to. I even tried updating the firmware. I exchanged it for another one and this time It will not calibrate at all. I tried using the RF Demo kit as well. I got the -H, but the RF Demo kit says its for the -F, did I kill the NanoVNA using the -F RF Demo kit?
The replacement when using the smith chart doesn't move from center even with open or shorted cap.
FWIW I know .001% of what I'm doing.
