开云体育

Yes the Al will vary with frequency for ferrite toroids. The reason is that the permeability of the ferrite toroid varies with frequency and the Mix (31,43, 75) etc. has a significant effect. Powdered

Use the deepl translator. It will translate pdf files and keep them in the same format as the original. https://www.deepl.com/translator/files Attached is a translation to French of one of Arie

And, speaking of Smith Charts, if you haven't yet discovered SimSmith, give it a try. It's free. http://www.ae6ty.com/smith_charts.html There is also an excellent tutorial linked from that site. Dave

I have a lot of bad luck with Adobe. I had a CS3 version with Acrobat 8 pro (+ license) but it refuses to work. With Adobe it's hard problems. It is therefore insoluble for me to translate your .pdf

Hi, You can translate it doing the following: ?- Open the document with Adobe Acrobat - Select the whole text and do copy (Ctrl-C) - in your navigator go to go to https://translate.google.com/ - In

It's a pity that your pages are not in HTML; it would have allowed Chrome to translate them to me in French, online. In English, I can't follow. thanks anyway

Hi, I wrote several articles on nanoVNA measurements. You can find them in English here: https://pa3a.nl/nanovna-metingen-and-smith-chart-articles/ There's also a part about determening toriods, mu's

I agree.? It matters what you consider a good antenna.? We hams tend to want to see a 1:1 VSWR as a good value, but in the commercial world a VSWR of 1.5:1 (14dB RL) is considered acceptable.? Just

Fitst check continuity before all with and without short circuit on the antenna itself! 73 Olivier F6CNG

I understand these comments but have read so many emails where the questioner was advised to go back to a certain firmware because the “latest greatest” wasn’t working. Just my opinion. Some are

Just being a commercial antenna does not mean it is a good antenna. If you want to make sure the NanoVNA is either hood or bad, check out the antenna exactly the same way you did with the NanoVNA. I

Hello I have very little experience with toroids. I made some RUTHROFF transformers but nothing more. On my cores, I note that the Al is not constant. Is this normal ? TORUS ==== Outside diameter ?

Thank you Victor Hi there I did well to tell you clearly what I did not understand. Our linguistic difference plus character encoding problems had greatly scrambled the transmission. The ? which had

But old firmware DOES have "broke" stuff in the form of bugs, etc., that is why the authors push out the new releases. 73, Don N2VGU

I really dont think you wanted to send the link to all of your pictures.

Hello Francois, Op di 5 jul. 2022 om 20:17 schreef F1AMM <18471@...>: But you used R/Ω (in "S11 R/Ω & X/Ω"), so I repeated that (did not want to introduce something new), but indeed it is R/ω

I hate RP connectors, just for that reason.

If it ain't broke, don't fix it. At least not until you know it well enough to know what needs to be fixed. I have had too many cases where a software update broke more than it fixed. SherpaDoug

I have to use translate.google.com to write you and chrome to read you. In the message there are writing conventions that I do not understand. In addition we have special character encoding problems

You can dump current firmware on NanoVNA Use DFU mode and Upload Action (and set firmware filename) For load new firmware need use Upgrade Action and select file.