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Use a small common mode choke at the antenna to decouple your body parts from the measurements. *Clyde K. Spencer* [email protected]> wrote:

I could but that would require a coax jumper of sufficient length to avoid de-tuning by my body. As is, the jumper goes from the radio to the attic, maybe 30 feet in length. After adjustments are made

You should not need a THRU or ISOLATION calibration for a pure S11 measurement though it doesn't hurt. Many beginners forget to tap DONE when they are finished with their SOL calibration...

you try everything and nothing works. This is why being able to have an onsite nanoVNA measure at the antenna may be the only definitive answer. The nanoVNA does not lie BUT you must ensure ALL the

Why not tune right at the antenna in the attic using the NanoVNA?

Well I have a varied Career in Broadcasting from floor Technician to RF Engineer in Transmitters, AM, FM and TV 5 Watt relays to 50 KW base stations. Then I went on to Telus a Telcom was involved it

Jim, others may have done this but I haven’t seen their posts. What a great idea! KI4QCK

Surely I am not the first to do this but I want to crow anyhow. I have just setup a 6M Yagi in my attic. I am mostly concerned with overall system SWR. I put the VNA at the shack end along with a

Thank you Dave for your experimentation with this little VNA wonderbox. I am discovering what it can do. So far it has enabled me to avoid frustrations with some uhf antennas I am playing with.

That video led me to another one which finally landed me on this one: https://www.youtube.com/watch?v=fSzY5q-QTpw That guy does some pretty interesting stuff... -- Member of the toughest, meanest,

But in retirement the work IS play! My 8753C weighs nearly 100 lbs.! No way is it going to accompany me outside to make measurements of antennas. The NANOVNA certainly can and does go outside to make

You are welcome. Since R&S was a partner in this education process, there are additional videos on more basic vna topics. https://www.youtube.com/@Rohde-Schwarz

Thanks a lot Alan for sharing this article. Skimmed through it and bookmarked for detailed reading. 73 Jon, VU2JO [email protected]> wrote:

Same thing happens at the countryside

From Microwave Journal May 2025. An very nice article addressing RF Microwave Design and Measurments at the University of Bristol. A series of You Tube Videos located on the reference page, at the end

I see another person who asks themselves where did I ever find time to work. Retirement while every day "may" seem like Saturday there are days when it feels more like the first day after after a long

finding anything like that in the dumpster. I am envious. I worked with Lab Grade VNA since 1979 and continued until I retired in 2001. I received a nanoVNA for Christmas 2024. having a VNA which fits

Having the 8753C is a privilege of once having worked for HP. As you may know, HP (before Carly - the wicked witch of the west) encouraged dumpster dipping. There were two of these in the dumpster. I

I can't give you numbers of improvement as I didn't record those. But I can give you the order of additions. 1) Lengthened the shield between the ports. It was originally only the width of the main

As promised, I made some rigorous measurements of my home brew fixture for making transmission measurements of various HF circuit elements using a "professional" instrument. I could have used the