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I received this same six-connector "NanoVNA Testboard Kit" with my VNA. Where can I find documentation for this kit? The documentation link in this thread is for a different two-connector test board.

Great video, Gregg. Thanks very much. 73 de Raoul, CE3RY

This just became a bit more interesting. It seems that there is a discrepancy in how SimSmith calculates the angle depending on the circuit block used. For an S block it shows the same curve as in

I guess that depends on what you consider as minimal and if you are modeling an ideal resistor or a more realistic one. For example: on the first image is the plot of voltage angle at the load (port 2

I would presume type 43 material is used? For 160 and 80-meters your setup is quite reasonable. If you scanned to 30 MHz, likely a clean-up would be required, but you are aware of that. Good work!

https://youtu.be/_vvCBarRaPY Here’s what I did to measure the common mode attenuation of a current balun that I recently constructed. -- VE6WGM

Dragan, Thank you for clarifying what you did on your tests. I took a look at the .s2p file that you posted and see that you get the same large S21 phase shift that I got in my tests. I posted my plot

Hi all! I don't know if I have problem, a faulty display or a firmware bug. I'm testing the function L/C Match. I enable the function by clicking "MARKER/SMITH VALUE/L/C MATCH" in the menu system, but

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