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Re: Chasing ghosts??? #internals #calibration
I am new to VNAs, but have wondered during these past few weeks as I experimented with my NanoVNA-H if it is better to calibrate /within/ the 3 bands that use different harmonics. 0-299MHz 301-599MHz
By Rich NE1EE · #6450 ·
Re: How to make Nano VNA Saver fit the full screen without using vertical scrollbars
I park my taskbar on the left, because most screens these days have lots more pixels in width than in height, and I auto hide the taskbar.This is especially useful when running several fldigi apps
By Rich NE1EE · #6449 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
No. nanovna-saver is written in python, it runs anywhere you can get python. I use it on my linux systems. Shouldn't be hard to add an interval timer to it. However, I've thought that maybe it would
By Steven Dick · #6448 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
I like nanovna-saver, but that runs only on Windows? And I don't know that it has an interval timer for data acquisition. -- On the banks of the Piscataqua Rich NE1EE
By Rich NE1EE · #6447 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
How about connecting a Pi or summat running *nix and Python. Not an expert w either one, but have tinkered w the Pi (and others, such as Propeller)
By Rich NE1EE · #6446 ·
Re: IP3 measurement
Hi Larry, Erik, Jim, Thank you very much for your replies, seems what I am after is possible but not as straight forward as I had hoped. Well, need to find the time to experiment a little and see how
By M0ZHN · #6445 ·
Provide feedback and recommendations to developers
I see that I am not the only one who wants to know how to contact developers. I looked on github, but didn't twig to the usefulness of this feature. Oristo replied to another post with this
By Rich NE1EE · #6444 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
Thanks for this tip...I have been wondering how to provide feedback and recommendations to developers. -- On the banks of the Piscataqua Rich NE1EE
By Rich NE1EE · #6443 ·
Re: How to make Nano VNA Saver fit the full screen without using vertical scrollbars
Hi Rune, Could I also add a request to be able to change the size of the markers on the graphs. When larger line and plot sizes are used, it can become difficult to see the actual markers. Thnaks,
By Martin · #6442 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
Thank you Oristo. I'm not sure how to press pause when the unit is hanging on the antenna up in the air, that's the reason I think a *scheduled *one scan+pause will do it. To clarify my request, let's
By Ady, YO2NAA · #6441 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
Hi Ady This is already possible using https://github.com/qrp73/NanoVNA-Q/releases Not sure why delaying start is necessary; scans until pause are discarded. Only the final scan before pause is
By Oristo · #6440 ·
Re: errors of "error" models
That works when short and open results are similar and load signal is small. Small load signal is generally easy for resistance bridge at low frequencies, not so much for reflection bridge and higher
By Oristo · #6439 ·
Re: Chasing ghosts??? #internals #calibration
Hi Kurt - .. and another piece of the puzzle falls into place.. Thanks ever so much!
By Oristo · #6438 ·
Re: errors of "error" models
The very "short" one port equation does get meaningfully close, but diverges with frequency. I haven't computed the impedance deviation yet, so it's too soon to pass judgement. My spreadsheet is
By Gary O'Neil · #6437 ·
Re: -10.8 dB log mag attenuation on thru, any help ,#calibration... Now works good
thank you, I made a mistake during calibration, now the reading is good, have a good day Gilles
By VE2KWG · #6436 ·
Re: -10.8 dB log mag attenuation on thru, any help ,#calibration
Hi Gilles, I assume you followed a calibration routine as documented. There is one in the file directory. See
By alan victor · #6435 ·
-10.8 dB log mag attenuation on thru, any help ,#calibration
hi, When I am doing a full calibrate O S L iso and thru. I get a -10.8 dB on log mag with the RG174 coax cable. on full RF span exemple: 28 to 30MHz or other frequencies range. channel select is
By VE2KWG · #6434 ·
Re: How to make Nano VNA Saver fit the full screen without using vertical scrollbars
Rune, While you are at it is there any way to integrate an option so that the cursor data can be displayed in the appropriate graph display area similar to the data that you see on the real VNA
By Sam Reaves · #6433 ·
Re: errors of "error" models
GIN & PEZ@arg; New results to please you all the more. I just replaced your mini equation: https://www.op4.eu/code/G-mini.c.gza.cc.by.4.0.2019.png with your even smaller equation as presented in Part
By Gary O'Neil · #6432 ·
Re: How to make Nano VNA Saver fit the full screen without using vertical scrollbars
I'm using a Dell laptop at 1366x768, font size 8, 16:9 aspect ratio, Windows 10. I haven't had problems with the scrollbars being present or overlaying the taskbar since before nanovna-saver version
By hwalker · #6431 ·