开云体育

Sorry, this reply was meant to be for a SMA connector. Jos Op 19-7-2020 om 18:21 schreef Jos Stevens:

In short... Variant -H is the base 2.8" version. There are earlier h/w revisions, such as Hugen's original spin (black PCB + shielding) and the many clones of this. These should all be considered

You're going to need something *Very Much* better than even the best NanoVNA to do those tests! Horses for courses, why would you use a ?50 "analyser" (that does work amazingly well) for any really

Which is the aim behind the presentation of the data (sometimes with a red digit) in the input field of the keypad on the NaoVna H4 (fw version 0.5.0)? It seems they are always integers. And if a real

Hi Charles. Nanovna-saver is a Python app which runs pretty much everywhere. I run it on Fedora Linux but any fairly modern Linux will work. Just visit github and choose the download/install method

Greetings, all... I've been reading this group for a while now and today I took the plunge and ordered a NanoVNA-H4. Should be here in about a week. And I'm not the most patient guy in the world when

Roger, Do you mean get the actual numbers that apply? Instead of the numbers you wish for? Just semantics - in this case significant. 73 de KEoZUW - John

At HF frequencies, all this hand-wringing is of no consequence. Tighten the SMA connectors finger tight and get on with your measurements. I did microwave engineering (1-100 GHz) for many years. 73,

Thank you Gyula and all the rest that replied. I managed to get Python loaded onto my shack computer and then I ran into another problem. Right now I’m not sure what it was. However, a friend of

Kees, Personally, I am happy with the present scheme for the Reference Position. Regarding the red digit on the data entry line: More recent firmware versions seem to behave differently. Try some out

Not sure if this is helpful or not, but I have and use a "fall of potential" ground resistance meter to check my ground restivity. It uses a built in AC oscillator driving 3 electrodes with a given

Thank you wrote:

Reading the original Military Specification for the SMA stated 3 inch pounds for Brass SMAs. It also limited mates/demates to 500 per pair. So if you are attaching to a PCB mounted unit, that one also

How about someone in the group runs some tests on the electrical properties of the SMA connector torqued, finger tight and partially torqued? John, W?ZI

Some research indicates this idea has support elsewhere in the industry: https://www.maurymw.com/pdf/datasheets/5A-011.pdf

Not sure what you're talking about, Amazon has them for pennies on the dollar! https://www.amazon.com/3-5mm-connector/s?k=3.5mm+connector The nomenclature-related confusion potential is presumably one

Clyde Unzip this file: https://github.com/NanoVNA-Saver/nanovna-saver/releases/download/v0.3.6/NanoVNASaver.windows-latest.zip The exe file is in folder Enrique

The soil conductivity and permittivity change with frequency and over a very small area. Rudy Sevens wrote a paper on how to model a low dipole over ground and then change the ground characteristics

Great, now you can set minimum and maximum in SWR, now it works. There are also many markers, more than three. It is perfectly. I only use this program. it is very stable, I would say, it works for me

John, Thanks. Nice to read that it is possible what I was looking for. Sure. I discovered that it is possible to position the reference point not only on the gridlines, but also between them. However