Fran?ois: I really don't understand why you have such accentuated noise and deviation from
0dB on your post-calibration S21 plot. Mine shows less than .01dB deviation from 1 to 100
MHz. See the attached plot with the vertical axis zoomed in to +/- 0.5dB.
Hello
Indeed the curve you show (nanovna-h4_S21zoom_in.png) is perfect. I have never managed to do better than what I offered you. I don't know the cause. My box is a nanoVNA-F as attached. It has an aluminum alloy case.
I do with :(
73
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Fran?ois
-----Message d'origine-----
De : Stan Dye
Envoy¨¦ : samedi 2 septembre 2023 02:10
