Is the MFJ running on batteries?? Or a wall wart?
Personally seen erroneous readings MFJ on wall wart, batteries are better.
Then check adapter/cable for NanoVNA.
Something is different in the RF path.? Search, Grasshopper. WA0VYU
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On Mon, Jun 6, 2022 at 5:29 PM, Stefan<spommere@...> wrote: Thanks.
How do you explain this:
MFJ: 1.8
NanoVNA not connected to laptop via USB-C: 2.7
Forget about the laptop, the USB-C cable, the NanoVNA Saver app .. but just unplugging/plugging the coax among MFJ/NanaoVNA.
The MFJ is correct; I used it at another site last weekend, and compared the reading to a $10k spectrum analyzer someone used there.
I went through several cycles of calibrating the NanoVNA, all with the same result.
