开云体育

edy555 basically calibrated with the test jig as if ideal

One problem is that scikit-rf wants S11 files for ideal SOL but I did not find how scikit-rf can generate S11 from e.g. delay, R, L, C values. Since I have SDR-Kits BNC cal kit, perhaps S11 for those

Hi Oristo Than you for an interesting link. The Google translate to Danish requires a special study ? but I will give it a try Kind regards Kurt -----Oprindelig meddelelse----- Fra:

I'm trying to create a VNA error model to compensate for errors in the bridge and the Z0 reference Yes. Results match nanoVNA firmware Thanks for the links.! -- Erik, PD0EK

Hi Ian, what version did you install directly from Ubuntu? NanoVNA-Saver should run with that, assuming it's PyQt5 and not PyQt4 - but I haven't tried it with older versions. There's nothing in

Rune, I've tried that and you are right, even removing the version requirement altogether results in an error. I have tried to install PyQt5 directly from Ubuntu and, while the basic OS install seems

Hi Sam, what operating system are you using? I have tested 0.1.4 on a virtual machine with a 1366x768 screen, and it fits without scroll bars - *just* - with the default setup, on Windows 7, at font

Hi Ian, you can try replacing the "==" in setup.py with ">=" - seeing if there's a newer version. If that fails, try removing the version requirement entirely - but I don't think there is a version of

Octave calibration lacks a bridge compensation model? Results for nanoVNA match those done by its firmware? I cannot sort whether scikit-rf has a more elaborate model:

I've tried to repeat the install and note that after the command "python3.7 -m pip install ." I get the following error message (between the ***s): *** Could not find a version that satisfied the

Hello, Is there a way to configure NanoVAN Saver so that the entire Window fits the screen? My Screen resolution maximum on my HP laptop is 1366 X 768 Thanks, Sam W3OHM

One thing I find comforting. I have used the Jim Brown's K9YC tutorial on RFI and measuring impedance of ferrite devices and comparing it with the testing I do with the VNA. Interesting comparison. I

Hi all, a special use case of this analyzer would be an automatic antenna tuner for magnetic loops. The software had to read the operating frequency, and to calculate, if more ore less capacitor is

Two of four SMA-BNC pigtails purchased in July are already failed https://www.ebay.com/itm/254218176301 One is exceedingly affected by proximity and orientation, presumably weak shield attachment. The

Rune, Thats very helpfui, thank you. The OS is Xubuntu 18.04.3 LTS. Except for what I installed in order to install NanoVNA Saver the OS is as shipped. Prior to installing NanoVNA Saver I updated from

Hi Ian, newer versions of PyQt5 aren't available from pip on 32 bit linux - so that might be the problem. I don't know what version your Xubuntu ships with, though, and Google hasn't been helpful. I

Hi Rune, Yes, I did the pip install as suggested. Yes, its a 32-bit OS (i686). I'm not sure how to validate the PyQt5 install. Best regards, Ian -- Amateur Radio Station G8OGJ Matlock, England

All date is measured uncalibrated and loaded into Octave. Calibration is done in Octave so all calculations are identical -- Erik, PD0EK

The technique of nanoVNA designer edy555 is worth reviewing: "Remove the crystal filter and connect the resistors to get through characteristics. Next, disconnect the resistors and take isolation

Kurt, Thanks for your detailed explanation. I will have to read a few times to fully understand the background. But what you said makes sense and I will try to change my calibration process according