开云体育

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.

As am I. Why learn something outdated and then pootentially have to releard the current version. Do it once . . . . -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

Why It is very simple. It often happens that the update of an on -board ? software goes wrong and that we can no longer go back. It is traumatic.

Hello Nothing is simple for me. In addition, with age (73), I still understand so quickly but you just have to explain myself longer :). I have to use translate.google.com to write you and chrome to

I'm in the 'upgrade 1st' column. You are probably going to want to learn the upgrade procedure anyway and that's not tied to operating proficiency. In addition to bug fixes, newer FW will better track

A lot of folks, myself included, like to keep firmware current, as there are many improvements and bug fixes in the new releases. There is little that is more frustrating than trying to learn a new

Hello Francois, The complex permeability of a toroid is mu=mu'+j*mu" mu' is the real permeability (will determine the reactance of a coil) and mu" is the imaginary permeability (will determine the

Gerd and others, Use the nano with the firmware that comes with it. It does most of the things a ham needs out of the box. THEN when you are very familiar with it you can update the firmware. Why is

Question 1 ---------- Thank you for your patience. It is now much clearer. Can you tell me the diagram of the device to implement to make this measurement that interests me. Question 2 ---------- Ok.

I thought I answered your question in my earlier post. The author added that graph to NanoVNA Saver at the specific request of a user F4HTQ. It is ONLY useful if you are trying to determine the

Amidon buys many of their ferrite offerings from Fair-Rite. Dave - W?LEV -- Dave - W?LEV