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Barry visited our club's "Builders Group" via Zoom recently and gave his great presentation. The Builders Group hosts the more technically-minded folks and they all talked about Barry's pitch for days

Hello, I just started plying around with the NANOVNA V2 and would like to know if there's a way to reset the nanovna to how it originally would be when I turn it on. I tried introducing an electrical

NanoVNA Sorts Unknown Ferrite Suppression Beads by Fair-Rite Products Corp. https://www.youtube.com/watch?v=KmKQibSDzqM

Many antennas have an adjustment you can make by loosening and tightening using an Allen wrench. Adjust for 440 first (below the trap) then above the trap. I just did this last week with my NanoVNA

Hello team, While I was measuring the impedance of one choke I made, I was using nanovna-saver and the R S21 R+jX series chart its outstanding, as one can see the general behaviour and where X > R.

Hi Barry k3eui, As a university professor in electronics, I recognize the hard work and thinking that went into these 135 slides, thanks! As a RF and VNA newbie (with a fresh Nano VNA) I am really

Hi Barry, Our group is continually looking for speakers and topics each month, therefore access to this resource is greatly appreciated. Thank you. As you have given permission for it to be used, I

That looks like the printed chart that used to come with every Larsen antenna 40 years ago. The chart was accurate then, and assuming that nothing has changed in the base, I would assume it is still

From one Barry to another - Thank you for the effort and time spent and allowing us to benefit. I belong to 2 clubs and both will appreciate this presentation.

Thank you for posting it Barry! Much appreciated!

Thank you very much for this easy to understand lesson.

One thing to remember is that you are not trying to tune for 1:1 VSWR, you are tuning for MINIMUM VSWR.? You may never achieve a 1:1 VSWR and that's OK.? Most commercial antennas are specked for

I have replaced the rod with a piece copper-weld antenna wire, then do the trimming until I get it tuned.? If I cut it too short I use a piece of solder wrapped around the copper-weld to slid up an

I've had quite a number of commercial single, dual, and tri-band mobile antennas over the last 4 to 5 decades. None needed lengthening or shortening. I'd agree with Tim, KA4LFP. If you are measuring

Russ, I think he said he had. However I agree with you. I have never seen a scenario where a properly functioning antenna needed to have its whip cut down shorter than the length of whip that was

Greetings Nano VNA IO group, I've given about a dozen club talks on the Nano VNA over the past few months and decided now to split it up into two parts, each about an hour. Part I The Basics - very

Have you tried adjusting the length of the "whip" at the top of the loading coil at the base of the antenna? I would try that first.

One thing I've done is put a long length of copper romax into the hole where the whip goes. Hold that vertical with a bit of tape and string at the top tied off on something above. Then you can get

It can but at 20 feet away it should be very minimal.

Detuning isn't power sensitive. (well, if you were running kilowatts, and there were high voltage breakdown occurring in the building, then yes, it's a power sensitive effect). And yes, being within 3