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I do not understand what you mean. Do you mean the nanovna-saver.exe window (mostly black with some status lines on it: I am not able to do a command from there)? Or is there some console within the

I worked for PWA for decades and was the only engineer that used LabVIEW, now all the engineers do. It is very easy to learn (very friendly for EEs) and yes it is expensive. So I am glad to see that

Great! Thanks. Any google search I attempted lead me to the RSGB website, which was a dead end for me. I did realize the forums were right here on groups.io, duh.

Hello, All... I recently had a need to measure an unknown matching transformer. As it was in a sealed enclosure with noth but the wire terminal and coax connector exposed, and I didn't want to damage

[image: image.png] This should get you started. Dave - WLEV [email protected]> wrote: -- *Dave - W?LEV* *Just Let Darwin Work*

What's the ripple in the measurement from? A reduced SNR would give a random error, not a periodic one, but maybe it's a manifestation of a phase bias that is contributing more or less depending on

on real amplifiers, with non zero S12, the load impedance does show up at the input - imagine an amplifier with S12 of -10 dB and a S11 of -100dB.? A total reflection at the output of the amp will

This is what I get using an inductor (7 turns of RG58A through a toroid) and the component is connected to CH0 and calibrated: [image: afbeelding.png] You see the S11 |Z| graph is a straight line

Dave - Thanks once again for all the information. I'll test the modification using the 1/8 wavelength frequency in SimSmith and see how it compares. That change also allows the method posted by John

Did a quick search for RSGB sites as described but didn't have any luck. Could you provide a link or more info to help find them? TNX

Here are some S11 measurements I did "calibrating out" a 10 dB and a 20 db attenuator. Measurement errors get worse as you increase the attenuation but 6 dB won't be bad at all.

The last link on measuring Inductors had an error. Here is the corrected link.... /g/nanovna-users/message/20848 Roger

Joe, When measuring the inductance of a coil with a NanoVNA one needs to keep a few things in mind. The inductor will also have resistance and self capacitance. The self capacitance will affect the

How does the output load become part of the S11 measurement? I agree you need it to keep the amp happy, but when you make your?amplitude and phase measurements on the antenna tuner, the load

No....n o ....... N O..... I was dealing and referring to the INPUT which is what you requested! Yes, then read the combination looking back into the 50-ohm load and matching network which you have

As noted, the OP was looking at inputs, but someone else suggested a way to measure outputs. My comment was on that. Why would you want to feed an RF source to an output? Because you wanted to measure

"Then use the Nano to read the impedance of the tuner/dummy load?" This configuration?would be on the output of an amp, not the input. Measurement?of S22 and very often S12 can be very helpful as

Owen's posts can also be accessed on the RSGB sites. I subscribe to both the "antennas" and the "antennas research" sites from RSGB. Owen's posts are excellent and always technically and engineering

I was addressing the INPUT as the requester! Why would I feed an RF source to the output??????????? Dave - W?LEV

Some of you may be familiar with the blog of an Australia ham Owen Duffy. https://owenduffy.net/blog/ He posts on a wide range of topics and is technically quite knowledgeable. He "lurks" on this