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Please do not worry about DC resistance. I measured the v3.4 nanoVNA with another VNA and the port impedances are rather good -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA

I ran a test case simulation as a point of reference to a vna measure. This is 100 feet of RG-213 coax. However, I deliberately made the coax much better and than much worse than typical to compare

Larry, I recently bought a Nanovna-H4 and a measure 57.945 Ohms at port 0 @ 10kHz? (4 points measurement), at port 1 I measure a decent 50.336 Ohms. I'm worried about? this. Jos. Op 1-2-2020 om

Are you using the android app from the Google Play store or the Webapp at https://cho45.stfuawsc.com/NanoVNA/ ? You may need to use an OTG cable depending on which version of the NanoVNA you are

hi all,ive just upgraded my phone to android ver 7.1.1,the nanovna app opens but displays a white screen thats all,its a lineage 14 rom on the phone,any idea why i get this issue?,cheers all in

On Sat, Feb 1, 2020 at 08:05 AM, Larry Rothman wrote: If you have one of the newer versions with these devices with the mods already incorporated, can you please tell me what you see as the DC

Run the same test at 50, 100, and maybe even 200 MHz. Compare those loss measurements against published loss data for your coax. I've experienced coax cables that measure 'mostly' good at low

Larry. DC resistance is irrelevant. Measure in on State and above 50kHz -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik, PD0EK

Herb, If you have one of the newer versions with these devices with the mods already incorporated, can you please tell me what you see as the DC resistance on both unterminated ports? I measure

Some time ago I found https://quicksmith.online/ I used it a few times, was good. But in the end I prefer the good old RFsim99. I hope the author is still alive and will make it open source. Op

I ran across this link on one of the Russian NanoVNA user groups, https://github.com/hugen79/NanoVNA-H/files/4142428/NanoVNA.Rev.3.0.Mods.1.0.pdf . It is a fairly detailed document describing

From what I can see, the dellsperger software isn't free except in crippleware form. Full function costs $80 or so. As far as the rfdude software, many of his tools use mathcad which is not free.

Hello, - - - - - - - - - - - - - (c) gin&pez@arg (cc-by-4.0) 2019 : start - - - - - - - - - - - Well, after all that said at [1], [2], [3], allow us, please, to conclude that, FACUPOV the [NanoVNA

yes it was calibrated with a sweep from 3.5 to 4 Mhz

Did you calibrate the NVNA? -- Carey Fisher careyfisher@...

well im still no nearer to an answer!!

On Fri, Jan 31, 2020 at 04:05 PM, Kurt Poulsen wrote: Hi Hugen Please also take action on the opening for the USB C connection which is blocked for entry by excess material of the upper part of the

Oh well. I have not vetted the software it just looked like something that might be useful. Maybe you should send a message to the software author and ask them to extend the value range. I wonder if

Hi Hugen Please also take action on the opening for the USB C connection which is blocked for entry by excess material of the upper part of the case. The hole need enlargement by milling off the

Thanks Oristo, That sorted the interface between the NanoVNA and the software and I've managed to run the Calibration wizard successfully I think. so the cable appears to be ok. I'll try and get to