开云体育

NanoVNA app only works with the latest firmware from DiSlord or Hugen. The reason is that it uses a different data transfer protocol. Roger

What is wrong with the device?

Thanks - this 1/11 app looks promising ! What driver is required for Windows 7/8/10 ? I cannot connect so I know I do not have the correct driver.

Hi Manfred, I don't have much to offer because you don't have one of the ancient Q meters but with these old instruments you could determine the Q of a cap. I also have a GR-821 A Twin T Impedance

this is insteresting

I see that zarath is making changes.. Maybe some of them are fixing the problems? the "master" appears to be pretty similar to what I have from August.

Well, that's difficult to say, having no "standard" crystal. With my limited recent experience, I think it compares well with other methods. I'm accustomed to seeing differences of 2% or sometimes

Jeff, I just had a quick look at those papers. I didn't read them fully, and I didn't work through the maths, since obviously this isn't what I'm looking for. Unless I missed something, he just

Dear all, I've been using the RF Demo Kit for calibrating my VNA when measuring devices behind a U.FL connector (I'm only using fields 13, 14, 15 - short, open, load). I found out that I get better

Yes I was wondering how accurate is his method as he said it's only an approximation. Is the PHSNA value an absolute measurement?

Yes... Larry Rothman gave you the link to it. There are quite a few outstanding issues. https://github.com/NanoVNA-Saver/nanovna-saver/issues Roger

Hello builders - I was reading some of W7ZOI’s old website entries and found one on determining a crystal’s motional parameters by measuring the rate of change of X (reactance) at the resonant

I think it's this: https://github.com/NanoVNA-Saver/nanovna-saver

"Yes I have had this same problem sometimes with NanoVNA Saver. It is unpredictable when the program will crash after a calibration and the windows will all close. It probably has to do with a

Folks can always try out OneOfEleven's NanoVNA-APP . It also has a calibration function built-in. It's in the releases area:? https://github.com/OneOfEleven/NanoVNA-H/tree/master/Release There is no

Thanks. I'll probably have to do a firmware upgrade to start playing with the latest third party tools. There seems to be a lot of choice for nanoVNA firmware and I'm not sure who provides the most

Yes I have had this same problem sometimes with NanoVNA Saver. It is unpredictable when the program will crash after a calibration and the windows will all close. It probably has to do with a

If you make the measurement using the NanoVNA app by OneOfEleven you will see that it has adjustable sweep averaging and data smoothing built-in. You can also import the s1p file for post processing.

Kev, You can set it to back to zero from the menu item "electrical delay". You should have received a menu map with your -H4. If you lost it try this one....

"Joeqsmith" is a very knowledgeable fellow when it comes to VNAs in general and the NanoVNA in particular. He has quite a few interesting videos on his YouTube channel. His latest one is all about