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Re: NanoVNA LNA S21 & S11
wrote:
From all four S-parameters it is possible to work out the Rollett
Stability Factor K
https://www.microwaves101.com/encyclopedias/stability-factor
which will allow you to determine if the
wrote:
From all four S-parameters it is possible to work out the Rollett
Stability Factor K
https://www.microwaves101.com/encyclopedias/stability-factor
which will allow you to determine if the
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By
Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...>
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#2715
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Re: Firmware summary
Yeah, sorry about the window link, I was half asleep at the time.
DMR has mentioned a Linux how-to in this thread.
https://groups.io/g/nanovna-users/topic/33072199#1507
I think it's about the 4th
Yeah, sorry about the window link, I was half asleep at the time.
DMR has mentioned a Linux how-to in this thread.
https://groups.io/g/nanovna-users/topic/33072199#1507
I think it's about the 4th
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By
Larry Rothman
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#2714
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Re: Firmware summary
If you are modifying the FW *please* maintain a file in the Firmware folder with release notes and version information along with the location of the source repository.
If you make comments such as
If you are modifying the FW *please* maintain a file in the Firmware folder with release notes and version information along with the location of the source repository.
If you make comments such as
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By
Reginald Beardsley
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#2713
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Re: No Smith chart on the PC screen
Aha. That's what are for. It works now, Thank you.
Aha. That's what are for. It works now, Thank you.
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By
Leif M
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#2712
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Re: Better, Worse, Worst....... baloney.
Today I received my third Nanovna. This one, I believe, is one of the "better" quality, completing the triad of better, worse, worst. The construction is noticeably higher quality with full, soldered
Today I received my third Nanovna. This one, I believe, is one of the "better" quality, completing the triad of better, worse, worst. The construction is noticeably higher quality with full, soldered
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By
Warren Allgyer
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#2711
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Re: No Smith chart on the PC screen
Hi,
check for the "Smith.png" and "Admittance.png" file.
They should be in the same direcory as the "NanoVNA.exe" File.
73 Harald
OE3HBS
Hi,
check for the "Smith.png" and "Admittance.png" file.
They should be in the same direcory as the "NanoVNA.exe" File.
73 Harald
OE3HBS
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By
Harald
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#2710
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No Smith chart on the PC screen
The NanoVna seems to work but when I look at results on the PC screen I can't see the Smith chart. I see results plotted on the screen, probably on the Smith chart but Smith chart itself is not
The NanoVna seems to work but when I look at results on the PC screen I can't see the Smith chart. I see results plotted on the screen, probably on the Smith chart but Smith chart itself is not
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By
Leif M
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#2709
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Re: A bit off topic, but Nano VNA related.
Ok Larry, its a starting point that I never knew about.
I've not investigated anything to
do with the terminal stuff yet.
73 de Andy
Ok Larry, its a starting point that I never knew about.
I've not investigated anything to
do with the terminal stuff yet.
73 de Andy
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By
Andy G0FTD <punkbiscuit@...>
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#2708
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Re: nanoVNA Real Resistance Measurement Range
Greetings Mr. QRP,
Thanks for the analysis! Gosh it is amazing how close my DIY 50 Ohm BNC load with adapter combination match the SMA 50 Ohm reference load that came with my nanoVNA! I don't know
Greetings Mr. QRP,
Thanks for the analysis! Gosh it is amazing how close my DIY 50 Ohm BNC load with adapter combination match the SMA 50 Ohm reference load that came with my nanoVNA! I don't know
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By
Tom VA7TA
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#2707
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Re: A bit off topic, but Nano VNA related.
Interesting!!
By
James R. Chastain
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#2706
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Re: NanoVNA LNA S21 & S11
6 dB is too small, the output level may be very high for LNA and may overload it, so you may get incorrect measurement. I'm using 30-60 dB attenuator on the LNA input for measurement.
6 dB is too small, the output level may be very high for LNA and may overload it, so you may get incorrect measurement. I'm using 30-60 dB attenuator on the LNA input for measurement.
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By
QRP RX
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#2705
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Re: DIY loads
Thanks. Just what I wanted.
Thanks. Just what I wanted.
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By
James R. Chastain
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#2704
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Re: NanoVNA Saver - bug report?
Hi Nick,
please try putting the full path to the file in the field, not just the
file name. It may be a matter of which folder the software sees as its
working folder (generally controlled by your
Hi Nick,
please try putting the full path to the file in the field, not just the
file name. It may be a matter of which folder the software sees as its
working folder (generally controlled by your
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By
Rune Broberg
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#2703
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Re: Firmware summary
I agree and was going to put forth the same request as Rudi just did:
Due to an ever-increasing number of NanoVNA firmware developers providing binaries on this forum (I think it's up to 5 now) and
I agree and was going to put forth the same request as Rudi just did:
Due to an ever-increasing number of NanoVNA firmware developers providing binaries on this forum (I think it's up to 5 now) and
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By
Larry Rothman
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#2702
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Re: NanoVNA Saver - bug report?
Hi Rune
thank you so much for this application which I have been using to good effect this past week with the nanoVNA.
I think there may be a problem with saving and loading calibrations.
Yesterday
Hi Rune
thank you so much for this application which I have been using to good effect this past week with the nanoVNA.
I think there may be a problem with saving and loading calibrations.
Yesterday
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By
Nick
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#2701
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Re: Firmware summary
Hello Erik,
Thank you for adding your extension to the Hugen nanoVNA version 0.1.1.
It would be nice to fill out in the "version window" the version number,
e.g.: 0.1.1 + scan, 1500MHz
Then you
Hello Erik,
Thank you for adding your extension to the Hugen nanoVNA version 0.1.1.
It would be nice to fill out in the "version window" the version number,
e.g.: 0.1.1 + scan, 1500MHz
Then you
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By
reuterr@...
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#2700
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Re: nanoVNA Output Voltage
Some clarification from my earlier measurement.
The Measurement output from CH0 ranges from -13 dBm at 55 kHz to -36 dBm at 900 MHz..... a more than 23 dB variance.
Beginning at the first increment
Some clarification from my earlier measurement.
The Measurement output from CH0 ranges from -13 dBm at 55 kHz to -36 dBm at 900 MHz..... a more than 23 dB variance.
Beginning at the first increment
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By
Warren Allgyer
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#2699
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Re: NanoVNA LNA S21 & S11
Hi hwalker.Very thanks for answering my post & i read before your procedure. So the S11 isn't interesting in the LNA Performance.
Regards.
Hi hwalker.Very thanks for answering my post & i read before your procedure. So the S11 isn't interesting in the LNA Performance.
Regards.
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By
Said
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#2698
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Re: nanoVNA Output Voltage
The output power of the SI5351 is automatic set depending the requested sweep frequency, 2mA below 300MHz, 8mA above 300MHz
Similar for a manually set fixed output frequency using the freq
The output power of the SI5351 is automatic set depending the requested sweep frequency, 2mA below 300MHz, 8mA above 300MHz
Similar for a manually set fixed output frequency using the freq
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By
Erik Kaashoek
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#2697
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Re: nanoVNA Output Voltage
Hi, Andy,
we had the same idea, I measured the output and the frequency accuracy on the weekend. It is very bad if there are 5 kHz difference, e.g. on LF...the band is < 2kHz wide.
I have set the
Hi, Andy,
we had the same idea, I measured the output and the frequency accuracy on the weekend. It is very bad if there are 5 kHz difference, e.g. on LF...the band is < 2kHz wide.
I have set the
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By
df2jp_1
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#2696
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