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Re: Problem installing NanoVNA saver on Ubuntu 18.04LTS...
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
By Ian Beeby · #6401 ·
How to make Nano VNA Saver fit the full screen without using vertical scrollbars
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
By Sam Reaves · #6400 ·
Re: Measuring ferrite beads #test-jig
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
By Mel Farrer, K6KBE <farrermesa@...> · #6399 ·
Re: Integration of a nanoVNA unit into an antenna system as indicator of resonance frequency
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
By Wolfgang Kiefer · #6398 ·
coax fatigue #test-jig
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
By Oristo · #6397 ·
Re: Problem installing NanoVNA saver on Ubuntu 18.04LTS...
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
By Ian Beeby · #6396 ·
Re: Problem installing NanoVNA saver on Ubuntu 18.04LTS...
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
By Rune Broberg · #6395 ·
Re: Problem installing NanoVNA saver on Ubuntu 18.04LTS...
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
By Ian Beeby · #6394 ·
Re: Chasing ghosts??? #internals #calibration
All date is measured uncalibrated and loaded into Octave. Calibration is done in Octave so all calculations are identical -- Erik, PD0EK
By Erik Kaashoek · #6393 ·
Re: Measuring ferrite beads #test-jig
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
By Oristo · #6392 ·
Re: Measuring ferrite beads #test-jig
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
By UlrichKraft · #6391 ·
Re: Problem installing NanoVNA saver on Ubuntu 18.04LTS...
Hi Ian, I'm assuming you ran the "python3 -m pip install ." part from the README? Is the older laptop running a 32 bit OS? It looks on the face of it like an issue with the version of PyQt5 installed.
By Rune Broberg · #6390 ·
Problem installing NanoVNA saver on Ubuntu 18.04LTS...
Folks, Have just acquired a NanoVNA - installed on NanoVNA-saver on OSX no problem but I have an old but powerful laptop running Xubuntu 18.04LTS that I want to use as a dedicated workshop machine. I
By Ian Beeby · #6389 ·
Re: Chasing ghosts??? #internals #calibration
Is it practical to capture uncorrected data for OSL and DUTs from each VNA, then perform calibration corrections using some PC software, to better isolate hardware from firmware effects?
By Oristo · #6388 ·
Re: Measuring ferrite beads #test-jig
Hi Ulrich That is probably easy to explain. When doing the Ch0 S11 measurement I anticipate you are using a female bulkhead/PCB SMA adaptor to which you solder the coil. Then there are two likely
By Kurt Poulsen · #6387 ·
Re: Integration of a nanoVNA unit into an antenna system as indicator of resonance frequency
Hi Wolfgang, the search for freqency with best SWR and printing it on the display or via I2C to an external LCD would be great to have. As I'm not a maker of software for the nanooVNA or the used
By Arno DK3SS · #6386 ·
Re: Integration of a nanoVNA unit into an antenna system as indicator of resonance frequency
Hi Alan, yes I use a SPDT relais to switch either the TX to the loop, or the VNA to the loop an the TX is offline in this case. When the relais gets its 12V DC, this is the source supply for the VNA
By Arno DK3SS · #6385 ·
Re: Chasing ghosts??? #internals #calibration
Hi Erik Interesting test indeed. I understand that when you did not see any difference between the 3 VNA's and calibrating directly at the 3 VNA's it meant at a SMA female adaptor using the SMA male
By Kurt Poulsen · #6384 ·
Re: 50ohm cal load failed
No problem. Mel, <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avg.com
By Mel Farrer, K6KBE <farrermesa@...> · #6383 ·
Re: Measuring ferrite beads #test-jig
Hello Kurt, and others, I still haven't build a robust fixture, but experimetally taking some measurements on EMC bead, or right now on a wire-wound inductor with a 3mm ferrite core for EMC
By UlrichKraft · #6382 ·