On 2022-05-12 15:32:+0200, you wrote:
Exactly the same measurements made (from 50 kHz to 50 MHz).
Calibrated with SDR-Kits BNC Cal Kit.
Measurement done with NanoVna -H4 (fw. version 0.5.0) and NanoVna Saver version 0.3.9
Cable used: RG58 A/U
In your image, I see -1540 ps of correction. The value agrees w a VoP of .66 and .305 m of coax.
When do we expect to see a negative angle?
I cal'd with ~175 mm extensions, then when I ran the test this morning, I simply didn't add them. I got a +20deg phase, and needed -1750 to correct. But that seems to imply that you did the same, and I kinda imagined that you slapped a 1ft piece of coax on the calibration plane. When I do the same (add some coax), I get a +phase shift, and the H4 needs +1750 of delay.
Comment?
Rich NE1EE