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I hope you disable internal NanoVNA calibration and use only NanoVNA Saver calibration Linear Interpolation (used in internal calibration if points count or frequency range not equal) can give errors

Two easy explanations (assuming a perfect cable) are: 1) The 2 port cal doesn't necessarily take into account that the Ch1 (port 2) isn't perfect. 2) Your S/O/L loads for cal aren't perfect (or more

Can anyone explain these wiggles. I am just measuring the group delay of a 2m cable with NanoVNA Saver using a 1MHz to 701MHz 1212pts 3average sweep. I used both a NanoVNA H4 and NanoVNA V2, but the

Since you've been doing this a while, you don't have an issue, but in general, one would want to make sure the isolation between switch ports is high enough to make sure that when you run 100w to the

I have my antenna going thru my MFJ tuner then to the common terminal of a 6 position coax switch. I leave the VNA connected to position 6. Coax 1,2,3&4 each go to different radios I have. I can

I connect a nanoVNA-H4 to my antenna through a tuner. Why not? It lets me watch the effect of the tuner on resonance frequency and SWR as I adjust the settings.

Yes, you can absolutely connect a VNA to an antenna via a tuner, it is an excellent way to tune an antenna/tuner system without transmitting (other than the sub-milliwatt VNA signal) and subjecting

I changed your initial subject ? Thanks for the help ? to make it conform to group io Hello - Hazard: none - Usefulness: this way you can preset your MFJ-971 and then; connect it to your TX. By

Thanks to all for their answers to my questions. Much appreciated, and may be useful to many others too. Now for another question for which I have searched and found no answer. Is it safe to connect

Thanks Stan. I will give that a try. Fred

For early versions of firmware, that display comes up at power-on. My recent firmware version has it in the menu at Config -> Version

One thing to remember is that you can calibrate over a range like 50kHz-50 MHz. You can then sweep a smaller range and as long as what you "calibrated out" isn't too weird, it interpolates. So you can

And we are talking about folding back a *very* short length of wire compared to the total wavelength, not an extreme example of half the wavelength, so, as you yourself admit, for the application I

No, it doesn't. Take the extreme case of having it folded back about half its length. This is a technique used on 40 yagis, because the element length is so long. By folding it back, you roughly

What is the sequence of menu selections to get to the display that talks about version levels, and all the specifics of the nano. I have the Nanovna-H4. Thanks Fred - N4CLA

https://youtu.be/gkmZZbKPlMA

It works fine for insulated wire too, you don't need it to short out. [email protected]> wrote:

--- Clint Sharp <cjaysharp@...> wrote: This works well for bare wire, but not for insulated wire. And if you follow my recommendation of only 12" on each end for 80m, and only 6" on each end for

You don't need to cut any, fold it and cable tie it then you get a second chance if you go too far. If you really want to then you can cut later but 4 years on and my wire antenna is still folded.

For 80m antennas, a foot on each side is a good small pruning adjustment. For 40m antennas, 6" on each side is a good small pruning adjustment. I know this from experience.