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I've measured in the HF range only. Low and high impedances, testing with resistors. The results are in the following documents:

I think that would make high/low measurements much less accurate! To the OP: As a suggestion, anything more than, say, 5 times from the nominal 50 ohms will be subject to increasing inaccuracy. Say 10

Or less like 3 or 6 dB

In my possible dumb imagination I would use a 10 or 20 dB attenuator to avoid mismatch on the NanoVNA side. Then measure the impedance. Then I would make an a-symmetrical attenuator from 50 to that

Is there a performance specification for the nanoVNA? Particularly interested in V4.2 HW version as I have one Kind regards Ed G8FAX

You won't need it. The nano measures it all. What's your name? Op 20-7-2022 om 10:34 schreef Observer:

yep, I am experimenting with hf antennas, with unknown, or predicted high z or very low z

Are you going to use one? Op 20-7-2022 om 06:00 schreef Observer:

Anyone has used the nano with an antenna bridge ( or noise bridge ?) to measure antenna impedances other than 50 ohms, like 300 ohms and up ?

hate Youtube ! Often, they dont get to the point, waste time on bla bla, to incease the time

Concerning your filter, note that: nanoVNA makes its measurements with an internal 50 ? impedance generator. When you use this filter behind a PA, fortunately, its internal impedance is not 50 ?;

Thanks for the explanation on the basic operation of the nanaoVNA bridge. It must not be easy to measure the phase! Unfortunately, I don't know Python. I'm just getting by in C and C#. For the

Jim, I am no RF expert but you really did a great job in your response. I seriously appreciated your thoughtful and informative response. I just joined this group and must admit I am very impressed

Hi All, I have a 6 meter amp project I've been slowly working on. It's modifying a Larcan lo-lo 1Kw amp used in a VHF channel 4 TV station to 6 meters.? It's based on the work of K1WHS. I got a low

There's no pulses - each measurement is made with a steady state signal. For S11 measurements, it's like feeding a zero ohm output impedance signal generator through a 50 ohm resistor to the input of

Diane, Unfortunately you are not using the edelay correctly. Once you have done your SOL directly at the NanoVNA connector you connect your test cable and do NOT attach the open end to anything. You

Yes that is true for real-world inductors that you test. Air coils have minimal variation but those with a core of powdered iron or ferrite material have more change with ferrite having the most. (see

This part of the text (once translated into French) is not clear (understandable). Can you be more descriptive please. I use the .Sp1 files to recalculate everything, which makes it possible to

No Pulse, just analysis of peaks and nulls in the response. i.e. 1/4 wave response and 1/2 wave response are opposite.

You know, I've had AN11276 for years but never looked at it because I don't design inlays. Thanks very much for bringing it into the conversation. Of course that's the right place to look for ideas.