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nice as a guide, but lots of places have had *significant* changes in development since 1954 when the data that goes into that map (published in 1972) was likely taken. At a guess, I would think the

If you like other people’s measurements, you might like a map of ground conductivities of the US at “broadcast band” frequency. https://www.fcc.gov/media/radio/m3-ground-conductivity-map (Chuck

The threads shouldn't make any difference in leakage on an SMA. The mating surface is the shield, and the threads are just there to "push" the connector together tightly. After all, there are SMA

I haven't added the graph/trace type you wanted, but I have made it so that you can now have two separate graphs on show at the same time so that you can choose whatever combination you like DMR, I

I do work for an SDR developer whose radios span < 1MHz to > 18GHz. We have all the "good gear" for test and measurement because our customers often insist on it. That said, below 500Mhz there isn't

They are TOKO 5HT filters. The tuning element is a ferrite with a slot in the top of it. I don't know if the e-mail allows photos, but I attached one. I did the full OSLT cal and stored it in one of

I love it. One question spawns many more, the number of questions increasing in excess of the geometric progression, 1, 2, 4, 8, 16...... Dave - W?LEV -- *Dave - W?LEV* *Just Let Darwin Work*

This is the open-wire line approach first described by George Hagn. Rudy Severns isn't so wild about it. He uses a probe and ground screen approach.

Hi all I cant thank you enough for all the helpful replies I have received In retirement I seem to have become a historian! See QRZ.com My interest in ground electrical properties stems from my

What bandwidth are you expecting? At least one triple resonator 1296 MHz filter that I have seen recently is wider than the 40 MHz you are sweeping. What loss is the S21 indicating? What is it

How are the resonators tuned? Screws through a soldered-in-place nut do not make a good solid contact. I've tried it many times at both 1296 and the H1 line (1420.405 MHz), and the result is unstable.

I thought I'd use my NanoVNA H-4 to tweak a 3-pole helical filter for 1296 MHz that I have for a transverter. The helical filter is mounted on a pc board with SMA input and output. I calibrated the

This may help you https://www.dl1glh.de/groundconductivity.html Juan Pablo EA4CIV

I saw a comparison of Nano vna with expensive devices, the graphs are very similar! So no need to kill the brain of radio amateurs! This device is made for them!

This thread is degenerating into a here is why everyone asking questions is stupid. All those with such great knowledge have made their point and need to move on. Those of us without great knowledge

Will it run under Windows 10 64 bit, and if so how? Command line entry?? Thanks Darrell N5FTW Sent from my over-rated IPhone 7 Plus. Any Mis-spellings or grammar errors are due to my IPhone auto

One more question. Is it possible to enable the color command? I modified the color of the strokes a little and I would like to do the same on your FW.

Thank you! I didn't know there was a wiki. I could not find one using due duck go; I guess I just didn't use the proper verbiage to get where I wanted to be. larry

Thank you! larry

Thank you OneOfEleven !! I have now tested nanoVNA.exe because I had not yet tested it. I liked the software, it has all the necessary information. Perhaps the slightly larger letters would help