开云体育

I have also learned a good bit from this discussion Pete. 73 Jon, VU2JO [email protected]> wrote:

Mike, you can use this program to measure your transformer without using a resistor. It lets you vary the effective resistance by typing instead of soldering. https://k6sti.neocities.org/splot Brian

Jon & Mike, Thanks very much with this. I have learnt so much over the past 24 Hours and still a long way to. Cheers Pete

The NanoVNA-H with firmware version 1.2.43 (Build Time Feb 19 2025) has more Meu buttons than what I see on the supplied NanoVNA Menu Structure Map. Where can I find the updated map? Most menu

I tested my unun by placing a 2400 ohm resistor in series with the S21 input. This loads the secondary with approximately 2450 ohms which is the typical source resistance for an EFHW -- Mike G8GYW

Here it is Ed: "The turns ratio shown is actually 2:15, implying a nominal impedance ratio of 1:56 (NOT 1:49), or a nominal load of 2813 ohms. Beside that, the measurement technique looks sound." This

Thank you Alan for the clarification. 73 Jon, VU2JO [email protected]> wrote:

Jon- Please repost Owen’s comments to which you refer. Thanks Ed McCann AG6CX

Hello Jon. What you demo in the video is quite fine. No issue and Owen's comment is appreciated and correct. The turns ratio appears to be 15 to 2 or 56.25:1 not 49:1, no issue. Yes, the dipole is a

I got this comment below the video today: "The turns ratio shown is actually 2:15, implying a nominal impedance ratio of 1:56 (NOT 1:49), or a nominal load of 2813 ohms. Beside that, the measurement

ok on all Dave... However, what Jon shows in the video, the infamous UnUn is not an autotransformer... In summary, the key difference between an autotransformer and a transformer is the presence of a

Thank you Dave for the clarification. 73 Jon, VU2JO [email protected]> wrote:

Regarding the following message: "This is how I checked my 49:1 unun for EFHW with NanoVNA: https://youtu.be/1JUI4rO3T2g 73 Jon, VU2JO" *** An UnUn is not a balun and is incapable of transforming

This is how I checked my 49:1 unun for EFHW with NanoVNA: https://youtu.be/1JUI4rO3T2g 73 Jon, VU2JO [email protected]> wrote:

I purchased a H4 back about 12 ago. Up until now, it's only been used for SWR testing, but now I want to test the Chokes & Unun's I build. I have watched a number of YouTube videos on how this done

This is an excellent video for those like me seeking to understand how to use the Nano VNA. The video is in Polish but you can change the sub titles to English and slow the video down.

Yes

Will the win32 version run on W11 64bit? Regards

Hopefully better readable now (spaces ignored, why?). Thank you Torbj?rn. After receivng a reply from Maurizio, I searched again on the github page of Dislord (also tipped by Stan), although I had

Thank you Maurizio for your reply. Torbjorn refered me to the Github site of DiSlord https://github.com/DiSlord/NanoVNA-App/blob/main/Win32/Release/NanoVNA-App.exe 73, Kees, PE0CWK Op 5-5-2025 om