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Great info all. I was aware that using coax with clip leads would add to some errors. I was working HF band below 30mhz so thought I might get away with it. Perhaps not. Lots to learn about making

Thank you for your suggestion. I ran the Youtube, and I agree he is a great instructor. I had planned another presentation on the Smith Chart, so this would fit nicely thereafter. I will contact Barry

I made a jig so I can test Tesla coil components with. The first couple permutations of the design used alligator clips. I hade to fashion cal standards for SolT ISO, but in the end I believe

On 11/03/2023 19:26, Larry wrote: [] > If instead you have a canned presentation that would be welcomed as well. [] > Thank you for your time and consideration in this request. > Larry Land, ki5oez >

For testing non-insertable devices (devices that don't have the appropriate connectors to maintain a Zo of 50 ohms) I have used microstrip transmission lines for calibration and testing. The Zo of the

The bottom line for most VNA calibrations is that improvements in "raw" performance, that is, the smaller the errors you are calibrating out, the better and more stable the measurements using those

Thanks Dave for your comprehensive response. Hope the incoming storms keep that wire on the sky. Ed McCann AG6CX

You can also use the MS "Snipping Tool" if your laptop keyboard does not support "Print Screen". Dave - W?LEV [email protected]> wrote: -- Dave - W?LEV

QUOTE: " Could you provide a bit more detail on your description:" QUOTE: 1. The actual antenna in the air. Following is a rough sketch of the antenna. The feed point is about 30-feet above soil

If you want to take a screenshot of the graph in Saver right click it and then Save it. If you want a screenshot of the NanoVNA press the "Manage" button and select Screenshot. Roger

Steve, Yes you can do the calculations to find the through power to the antenna with the aid of a NanoVNA. Some things to consider. - Some transmitters will automatically slowly reduce their Tx power

Those ferrites in power supplies are not iron core. The only place I've seen iron core chokes are in HF communications equipment. Mike n2MS

Powdered iron cores are all color coded. In general, ferrite material is not color coded, although some suppliers may. Dave - W?LEV

Using short coaxial cables with alligator clips on the end for S11 and S21 can easily lead to erroneous results. At best it is only useful for measurements in the HF range. There are several reasons

Bryan, Those power supply ferrites are useful for low frequency power or choke applications but are not that useful for HF balun, unun or transformer applications. The unknown ferrites I find useful

The nanovna is a great tool to measure this; really what it can measure is the loss in your feed cable and the fraction of reflected power from the antenna feedpoint. An easy way to measure the cable

Much obliged Thanks Steve

you can measure your antenna ... (swr) and you can measure cable loss (s21) then you can do some math to see what your antenna gets from your trx (and what is your receiver getting on the rx side)

Is it possible to measure the actual power getting to the antenna with H4 model? I can't seem to find any documentation on this. Power is 4 watts. Thanks Steve KE8VHY

Thanks all. I just wasnt sure, for a thru cal where to place the Open Short and Load bits. Its pretty straight forward for using just S11 for reflected measurements. Mike that's a great idea for