¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date
Crystal parameters from slope of X with nanoVNA
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
By Nick Kennedy · #21462 ·
Re: Nano Saver errors off in Calibration
I think it's this: https://github.com/NanoVNA-Saver/nanovna-saver
By Larry Rothman · #21461 ·
Re: Nano Saver errors off in Calibration
"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
By Jim Lux · #21460 ·
Re: Nano Saver errors off in Calibration
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
By Larry Rothman · #21459 ·
Re: measuring Capacitance or Inductance
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
By jmr · #21458 ·
Re: Nano Saver errors off in Calibration
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
By Roger Need · #21457 ·
Re: measuring Capacitance or Inductance
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.
By Roger Need · #21456 ·
Re: Newcomer - Advice sought please -Edelay appeared and calibration awry
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....
By Roger Need · #21455 ·
Protecting your NanoVNA
"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
By Roger Need · #21454 ·
Newcomer - Advice sought please -Edelay appeared and calibration awry
Thanks in advance for any help. I'm new to VNA's and have enjoyed reading the posts here and starting out with my H4 from Hugen. I appear to have changed a setting and cannot find how to get rid of it
By Kev Haworth · #21453 ·
Re: NanoVNA measurement of an EFHW Transformer
There is a technique that has been described by Darko Kajfez (EE Professor Emeritus at the University of Mississippi) that actually gives good results for Hi-Q inductors on a VNA. And there is a
By Jeff Anderson · #21452 ·
Re: New user
Hi all, OK, I have fixed the issue and got it working. It appears a restart of the PC was needed, and although my nanoVNA showed up in the port area, I had to connect to it regardless. I had tried
By Phil Cooper · #21451 ·
Re: New user
Very good. Thanks. I need to update, however what I have is fine. Perhaps you can assist Phil with his issue. Again, thanks.
By alan victor · #21450 ·
Re: New user
No need for that anymore.
By Dragan Milivojevic · #21449 ·
Re: measuring Capacitance or Inductance
To give the nanoVNA a tougher test I tried measuring the Q of a small 50uH inductor across LF to 3MHz. In the plot below it struggles to indicate the Q as the data is very noisy and uncertain. The
By jmr · #21448 ·
Re: New user
Hello Phil, In the past, initial cal must be made on the hardware first. Saved via default in register 0. After that, further cals can be done from the saver routine. At least that was the process
By alan victor · #21447 ·
Re: New user
Hi Charlie, When i click on that, nothing appears to happen. It says to follow the instructions, and I get a pop-up to that says to ensure the nanoVNA is connected, which it is and shows up in the in
By Phil Cooper · #21446 ·
Re: New user
Did you perform the calibration on nanoVNA saver? Ignacio EB4APL -- El software de antivirus Avast ha analizado este correo electr¨®nico en busca de virus. https://www.avast.com/antivirus
By EB4APL · #21445 ·
Re: New user
Did you use the calibration assistant and follow the prompts?
By Charlie N2MHS <ucfargis1@...> · #21444 ·
Re: measuring Capacitance or Inductance
Yes, except in this case I'm making a 1 port s11 measurement with the nanoVNA. I use a very basic s1p data dump tool I wrote in VB and then I import the dumped s1p file into Genesys for analysis. It
By jmr · #21443 ·