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I'd like to start a discussion about using the NanoVNA (or NanoVNA2) in the context of a backyard antenna range.? One of the tricky things about doing antenna measurements has always been the whole

Hardware capability? What are you referring to?

It is legal to run an unlicensed transmitter on 13.56, as long as the power is low enough (i.e. meets Part 15). A few mW is typical, and as sunspots heat up, you could "work the world" with suitable

What the dickens are "Squarers"? I'll confess the ISM bands are a good place to hide possibly illegal and unlicensed emissions. However, as a licensed ham for some 61 years and worked professionally

Gary, IF the alternative RF path is down a pair of antenna wires near a feed point where the equivalent impedance is ~75 Ohms, then 3K ohms looks very good. On the other hand if end-feeding and using

RFID uses 13.56 MHz with radiated fields (limited, it's true), but all those "near field communications" things are also 13.56 (Subway cards, cashless payments, etc.). If you're making a "long range"

Dave, The measurement of common mode attenuation as it pertains to baluns and RF chokes has been discussed in this group several times and there is a lot of good info in those posts. Reading through

Probably has nothing to do with his use, but 13.56 MHz and surrounding frequencies on shortwave are the homes of many unlicensed CW beacons. Many are "squarers." Zack W9SZ

13.56 MHz is an ISM (Industrial, Scientific, and Medical) frequency. There are 7 frequencies allocated by the FCC for that purpose in that specific ISM band - in a NON_RADIATIVE MANNER. Why are you

It isn't clear to me what the situation is here. Do you mean you have an antenna connected to a 13.56 MHz signal coming from a signal generator or transmitter of some sort, and you wish to transmit

For those that may use Google, Google Docs will read and create DOCX files. *Clyde K. Spencer*

The simplest book which covers the proper subjects with as little calculus as I've seen is: Surprisingly enough, MFJ has an excellent resource. I picked up a copy at HRO a couple of years ago, well

Eric WA3UYI -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

I suspect it's MS Word vs something else. .docx works just fine on Mac OS, but you need MS Word.

Having not seen or read that book, I can’t say. Perhaps someone else on the list can answer that. DaveD

On Mon, Feb 1, 2021 at 10:21 AM, Dave Daniel wrote: Does something like the Practical Antenna Handbook by Carr and Hippisley provide a good overview of antennas for a ham without a background in

I have not done so but certainly can. I take the practical approach that it's what the system presents to the input of the L-network matching network with the CMC between the feeder and the network

And Unix and Android I think.

David: And if you “subtract” effect of your X feet of feed using your analyzer (or Zplots or whatever) out of curiosity what are the impedances at your same various frequencies at the feedpoint of

Attachments were lost in the forward. <d.milivojevic@...> wrote: