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Phil, Even if you know how to use the VNA, measuring the QMX lowpass filters is tricky. I have done it a few times and can help you, but it would have to wait until Monday since I currently have

I second this! After you learn to properly calibrate the VNA in your test environment, look up YouTube videos on the Smith Chart, there are many. The chart will map resistance, inductance, and

Use Smith Chart. If your marker is in the upper half, it's inductive. If below, it's capacitance. Sent from AT&T Yahoo Mail on Android On Sat, Apr 19, 2025 at 7:46 AM, Jon via

Dean, Can you kindly explain the method you have used to measure inductance and capacitance with NanoVNA? 73 Jon, VU2JO gmail.com@groups.io> wrote:

Phil, Are you using Nano VNASaver software on your computer to connect to the NanoVNA or are you trying to do it directly? First thing to remember is, Calibrate at the connection you are using to

Though I have been using NanoVNA for a few weeks now, I was not aware that it can be used for measuring inductance and capacitance. Now I will also join your search! Currently I use my LCR meter to

Hi Everyone, I'm new to the VNA and trying to measure both inductance and capacitance but getting stupid results. Is there someone who has this version of the VNA could walk me through the setup and

Yes, that is the reference choke...

Is this the reference to what you are trying to do? https://www.dj0ip.de/open-wire-fed-ant/balanced-line-choke/

Hi The choc of john its exactly an 1/1 balun made by a lot of ferrites, measuring a balun with an NanoVNA on a chack its a thing and results of balun mounted with a dipole antenna was a different

I think this is not correct in this case, Nizar. Measuring the choke is not measuring a transmission line with specific characteristic impedance that needs matched; it is more like measuring an

I wouldn't really describe this as a "common mode" (although that is used) - it's really better conceptualized as a third wire which is connected to the feedpoint, as Roger said. As noted, the choke

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

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

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

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.