On 1/25/2020 3:37 PM, Jos Stevens wrote:
Hi Oristo and Herb,
Thinks for the pictures Oristo, i think they are from the 2.8" NanoVNA-H, my 2.8 -H version works well, this problem is? with my VNA new version H4.
Herb,? yes I did use the calibration wizard and I have done it so often that I can do it blindfolded..
The only thing different is that For the H4 I used portsavers and used one of the cables that were in the box of the -H4, the firmware is still from the first of Januari 2020, I did not upgrade yet because I learned that there are problems with the new firmware.
Anyhow you say that you have no problems,? I'm using NanoVNA-Saver 0.2.2.1, the latest version as far as I know. I hardly can believe that the problem is in the hardware, because the hardware stand alone shows "Ch1 Logmag 10 dB/-1.42 dB @ 50 kHz" , -0.07 dB @ 810Mhz and -1.55 dB @ 1500 MHz after a 101 point calibration. A minute ago I ran the calibration again on NanoVNA-Saver and attached the pictures before and after pressing "Apply".
What can I do more ?
Jos
The RG174 jumpers that came with my Nano were very noisy.? I bought a kit of 5 teflon cables, now cal works good and no more noise.
Eric WA3UYI
