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Your setup is far from ideal, the breadboard is rarely a proper choice for VNA measurements. If you want to go via that route use something like this: https://www.kn5l.net/Balun-CM/Balun-43material/

Most of it is in the initial post, except for software (SimSmith). Plot commands for SimSmith were: Plot("R1", S1.z.R, "Ω", "y1"); Plot("X1", S1.z.X, "Ω", "y2"); Plot("Z1", S1.z.M, "Ω", "y1"); I

This user group is for both versions (I believe) but a new topic would be appreciated.

Firmware clone, especially when it is an open source project is a meaningless term. Hope that clears things up.

You did not provide any detail in your post about your test setup or how you derived R, X and Z from the S21 measurement. I do not recognize the plot formats that you are using. Also you did not

It's a cool firmware. But I think we have to discuss this in an other group. It's not for V1. -- Klaus, DL5KV

I'm not sure, but I think there are clones for H4 firmware, too. This ist only a notice of me. Maybe this problem doesn't exist on the V1. I haven't updated the firmware on V1 for a long time. --

This has been discussed before: /g/nanovna-users/message/2726 45 messages in thread.

a number of thread of similar problems on different units. So I don't think a dif mfg is going to solve the problem. One solution in a thread was to add ESD diodes which may be the best solution. Not

Wow! Your calculator is great Lex. Thank you for making it available to the rest of us. John AA7US

TU sir. Yes tried cal right at the terminal no cables. Checked the short and it is. The load is 50 ohms I am too unsure of loading firmware but a Buddy ham offered Thought might hv been a static

Instead of taking it personally and flying off the handle how about you offer an explanation as to why the Drake engineers put an electrolytic in this spot in the circuit? I posed this to Garey K4OAH

Calibrated with "0 length through", test jig connected to port2 directly: X: [image: image.png] R: [image: image.png] Z: [image: image.png] [email protected]> wrote:

Hi Roger Man, it sure did go off topic. (Bypass caps; where did that come from? Should be a whole thread on its own.) All I wanted was for someone to tell me how to use nano to measure caps and inds.

Paul, Don't throw in the towel yet. Did you have the NanoVNA anywhere near a transmitter? I wouldn't put more than about 20 dBm into CH0 or CH1 or you can blow out the front end. Have you tried

Ed, Sorry that this discussion went so far off topic. It would be really interesting to get an answer to your initial question. From reading your posts and looking at your data I think it might be one

Yes this is true. The "S21 series method" is a way of calculating the complex impedance (R+jX) of a device under test (DUT). Unfortunately it does not work on a NanoVNA-H or -H4 which are 2 port

Even a reasonably good 10 dB attenuator makes a good dummy load as the return loss is 20 dB - two passes through the -10 dB circuit. And 20 dB RT amounts to an SWR of 1.02 : 1. So, you not only have a

thanks

My Crystal Measuring Adapter for NanoVNA is almost finished. This will make it much easier to sort out crystals for building filters. Will I do the faseshift calculations by hand? I think not. I'm