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Users of a Maxwell or W2DU choke need to be aware that the effectiveness in reducing common mode current is not directly related to the magnitude of the impedance |Z| or S21 loss that they measure

I had bought one off ebay and it arrived in the smallest possible box, and when I took it out of the box that switch was at a rather odd angle, and did nothing. I returned that one, no issues with the

Hi S11 Smith measurements or S11 IZI is also possible , it should have higher then 1500 Ohm as mentionned by the paper , no care with one wire or two wire connected together , it should be very

I find the jog wheel quite useful for moving the marker. Alternatively you can use the Search Minimum function in the menu to find minimum SWR point in the tracing. I have not opened the casing for

Ooooopps...... I looked at the picture but saw what I expected: Coax. Thanks, Stan, for bringing this to my attention. Test just like my common mode chokes on toroids. Either or both wires will do.

The jog wheel is an a control that allows an alternate way to bring up the menu and select the menu items. So if you are happy with doing it on the touch screen, you are not missing much. There are

In this case, Dave, if you look at his picture, he is using two wires for the choke conductors, not a coax. So either or both wires together should work.

To clarify, it's a NanoVNA H (classic) and matches the image for a good model in the Wiki. -- --- Do Justly Love Mercy. Walk Humbly.

I have a NanoVNA (2.8" screen) from about 2020. Overall it works well, but the Jog Switch doesn't do anything. The touch screen works fine, it calibrates OK and measures SWR with ease... but the jog

Since the center conductor closes fields to the interior surface of the coax shield, it does not interact with external fields. Therefore, it's only necessary to connect the outer shield between the

I do a 'loss' measurement rather than an impedance measurement. To do this, do a 'through' measurement (S21), either on a single wire, or both wires together, connected to the center pins of the

I have made a Maxwell choke for my ladder line feed to my doublet. I would like to check the common mode impedance with the nanovna. Do I just use one of the wires for the reading or both? A diagram

On Sun, Apr 13, 2025 at 02:14 PM, CLIFTON HEAD wrote: Hi you con download the nanovna-App at https://github.com/DiSlord/NanoVNA-App/blob/main/Win32/Release/NanoVNA-App.exe some time is sufficient to

I have problems with the NanoVNAsaver this would be helpful. The app that comes up is under development I see nothing more. Can you please give a link for what your talking about.

Mark, If you use NanoVNA app (not NanoVNA Saver) you can remote the screen to your PC. If you have a projector or large TV display then your audience can see what you are doing right on the NanoVNA

Dean, Had a look at the NanoVNAsaver page. The wiki does not seem to have a 'How to get started page'. Can you please give some tips for getting started? 73 Jon, VU2JO [email protected]> wrote:

Mark, I know of NanoVNAsaver https://nanovna.com/?page_id=90 as software to be run on your laptop. There is a little bit of a learning curve using the software but there are a number of Youtube videos

You're right Brian, I'm sending you an email. Thanks Jeff for the clarification, I did not understand this line nor why it was in the sheet. It's clearer now!

If you are planning on presenting the directivity and radiation pattern of the loop, that is a better job for the TINYSA, not the NANOVNA. The NANOVNA works in impedance space. A SA operates in the

No problem connecting to USB, but you’ll need to choose some software to run on the PC. ?THere’s a NanoVNA App, NanoVNA-Saver (which is python under the hood), and probably others. the user