On Fri, Jul 8, 2022 at 03:07 PM, <jetmech@...> wrote:
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.
There is no problem using the RF Demo kit with any NanoVNA.
If you are having calibration problems check the cal loads with a DMM to make sure you have an open, load and short. Calibrate right on the NanoVNA and only use the cable for the through cal.
When doing a cal make sure your RESET the calibration before you start and SAVE to one of the slots when done. After cal check with your loads on the Smith chart. Short on far left, 50 ohm in middle and open on far right.
Roger
Roger Need