Re: Homebrew sheilding
Hello Dave, Your screen shots does *not* tell the whole story. 72, Rudi DL5FA
By
Rudi
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#13769
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Re: Frequency error SOLVED by FW thanks to DiSlord !
BINGO ! After upgrading with your DFU file, i enter 100MHz in "CW" mode and get 100.00010 MHz at the GPS locked frequency meter. 1 ppm instead of the initial -85.5 ppm ! Fine Job DiSlord and many
By
Rudolf Schaffer
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#13768
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Re: I produced S-A-A V2.2
#nanovna-v2
I suggest you launch a kit for those who bought and did not have a small display. Case + display module 4 inches + firmware.
By
aleks07111971@...
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#13767
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Re: Frequency error
Select target id 00 Internal Flash 64 sectors or And press Upload
By
DiSlord
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#13766
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Re: Frequency error
Then you upload file from NanoVNA programm read all flash 128kB and save to file Then formware created, not used space not stored to file. 82kB correct file size Yes it Ok
By
DiSlord
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#13765
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Re: Frequency error
After reading the option "01", seems that you dfu file should be written into target option "00" (internal flash 64 sectors). A 2nd point: NanoVNA v0.8.4.6 Xtail 25997748.dfu is 82 Ko but the uploaded
By
Rudolf Schaffer
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#13764
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Re: Frequency error
Hi DiSlord, I installed DfuSe, connected to the NanoVNA after "Reset and enter DFU" activated; on the DfuSe screen i have 2 Targets options: -1- 00 Internal Flash 64 sectors or -2- 01 Option
By
Rudolf Schaffer
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#13763
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NanoVNA-V2 Support Page
A new technical support page for the NanoVNA-V2 is available at https://nanorfe.com/nanovna-v2.html . I believe Gabriel posted here, or elsewhere, that the NanoRFE Foundation will be taking over the
By
hwalker
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#13762
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Re: Calibration issue causing ripples in SWR?
#calibration
Ed, *1)* You've got a typo in your callsign: it should be KC1D*YK* (ROKBL!) *2)* In terms of verifying the fundamental measuring impedance of the nanoVNA, that's a lot trickier. The essence of most
By
G8DQX list
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#13761
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Homebrew sheilding
Hi just spent a UK windy afternoon confined to my radio 'shack' , so decided to upgrade the screening on my 'basic' clone nanoVNA to see if the INPUT 'noise' could be reduced. I made the screens out
By
Dave B
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#13760
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Re: Frequency error
Thank you very much DiSlord for your help and work. I will install this file this afternoon and inform you for the result. Regards, Rudi
By
Rudolf Schaffer
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#13759
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Re: Frequency error
30Hz in 100MHz. That is just 0.00003% low in frequency. For the money we spent, why would anybody not be satisfied with that? I'm still happy with the accuracy of my Grid Dip Meter. 73, Alek, VK6APK.
By
Alek Petkovic
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#13758
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Re: NanoVNA V2
May I ask, what is the assembly house of Saa V2? It has small chips, 4 layer board and components on both sides of the board. All these could make an expensive boards but apparently it is not
By
Leif M
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#13757
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Re: Frequency error
This is a different device.
By
Aleksander Shalygin
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#13756
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Re: Frequency error
100 mHz, 299 mHz.
By
Aleksander Shalygin
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#13755
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Re: Frequency error
Try this firmware, just quick build vs XTALFREQ 25997748
By
DiSlord
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#13754
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Re: Frequency error
Hello, For the moment, my friend has no access to the labo for component replacement (virus). I would try your XTALFREQU modification but i'm not able to modify and recompile your software. How can i
By
Rudolf Schaffer
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#13753
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Re: Oscillator 26MHz
After searching for this component numbering, i found nothing at LCSC. I've done many frequency measurements and? had a great drift with temperature. May be it's not a TCXO but a XO with +/- 100 ppm
By
Rudolf Schaffer
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#13752
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Re: NanoVNA firmvare, compiled by DiSlord
#firmware
At this time code very dirty and contain a lot of debug and test info and i not add it to git (if need i can send code on mail), at this time it only of 'proof of concept' SD card support need only
By
DiSlord
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#13750
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Re: I produced S-A-A V2.2
#nanovna-v2
Yes, I want to screw a 4-inch display to my V2, I can¡¯t see anything on the small display!
By
aleks07111971@...
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#13749
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