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Re: Review of S-A-A-2 #nanovna-v2
The Makefile is trying to get the current head revision identifier from git - but you have the source code without a git checkout. You should find the git repository you want to work from and clone
By Clifford Heath · #14042 ·
Re: out of "Presentation on the NanoVNA for the raileigh Radio Society", Now: "False Return Loss Calculations"
Hello all, What you do in your own shop (or ham shack) is of course your own business. But if you teach, please, please, teach that a passive load's return loss is a positive number of dB, as it is
By Dana Whitlow · #14041 ·
Re: NanoVNA V2
Thanks for the directions! Now I have both devices and both groups! 73 Dana VE3DS
By Dana Shtun · #14040 ·
Re: Review of S-A-A-2 #nanovna-v2
Szia Zoli, NanoVNA-H4-hez k¨¦sz¨ªtett Bluetooth el¨¦rhet?s¨¦get AA6KL, n¨¦zd meg : https://github.com/AA6KL/NanoVNA-H4/releases 73, Gyula HA3HZ -- *** nothing is permanent only change (
By Gyula Molnar · #14039 ·
Re: Review of S-A-A-2 #nanovna-v2
Dear David, Thank you for your answer, your proposal is a good idea, but I would like to use cpu gpio ports to control wifi communication... Many thanks and 73,
By Zoli · #14038 ·
Re: Review of S-A-A-2 #nanovna-v2
Can't help with the software issue, but I would be interested in your approach to adding Wi-Fi. If it were me, I would try to use the USB C port, since the that port looks like a USB serial interface
By Dave W6OQ · #14037 ·
Re: What does S21 mean in this context?
https://www.microwaves101.com/encyclopedias/s-parameters#:~:text=S%2Dparameters%20are%20defined%20for,to%20the%20number%20of%20ports. 73, Carey, WB4HXE
By Carey Fisher · #14036 ·
Re: out of "Presentation on the NanoVNA for the raileigh Radio Society", Now: "False Return Loss Calculations"
Yes, the "conventional" (meaning: widely published and often used) formula is: Gamma = (Z - Zo) / (Z + Zo) where Z is the impedance in question and Zo is the reference impedance for the calculation
By DJ7BA · #14035 ·
Re: out of "Presentation on the NanoVNA for the raileigh Radio Society", Now: "False Return Loss Calculations"
No, even though that could be a practical consequence. But that's not what I had in mind, as - I think - it is possible to reverse the RL sign of the NanoVNA per gusto as individually wanted. There
By DJ7BA · #14034 ·
Re: out of "Presentation on the NanoVNA for the raileigh Radio Society", Now: "False Return Loss Calculations"
Hi Darrel, From the formal and scientific point of view, this all can be discussed. Well, as a radioamateur I don't really care about Plus or Minus. The nanoVNA is the most used VNA amongst hams in
By Arie Kleingeld PA3A · #14033 ·
Re: NanoVNA V2
I recommend this group where they can hopefully answer it: /g/NanoVNA-V2 73, Gyula HA3HZ -- *** nothing is permanent only change ( http://ha3hz.hu/ ) ***
By Gyula Molnar · #14032 ·
Re: out of "Presentation on the NanoVNA for the raileigh Radio Society", Now: "False Return Loss Calculations"
Hi everyone, Interesting discussion. A point of clarification though is that conventionally, the definition of Gamma (reflection coefficient) is: Gamma = (Z - Zo) / (Z + Zo) where Z is the impedance
By af5fx · #14031 ·
NanoVNA V2
I have just received my V2 from Tinder after 40 days waiting. Question: 1. What type of LiPo 3v battery is best for this unit? Can you point me to a source in N.A? 2. Does anyone have a case design
By Dana Shtun · #14030 ·
Re: Nanovna on Zorin OS
Jon-G0MYW here is a link to a 7zip file with two scripts a readme.txt and a pdf. Instructions are in the Readme.txt file for installation. This has been tested on LinuxMint 19.3, Ubuntu 20.04, and
By f.ketterman@... · #14029 ·
Re: Nanovna on Zorin OS
Jon, others, I successfully installed NanoVNA Saver under Ubuntu 18.04 using a hybrid of two approaches found on the web. The repository installation instructions are not sufficient for 18.04. I
By G8DQX list · #14028 ·
Re: Review of S-A-A-2 #nanovna-v2
Hello, I ordered the nanovna V2 (3GHZ) 2 weeks ago, so far I did not get it. I would like to develop a wifi front-end to this equipment, but I have problem with compiling the source under linux mint.
By Zoli · #14027 ·
Re: Nanovna on Zorin OS
py2mta, I'd be interested in how you get on with this. I've spent a few hours trying to get this to work on Zorin/Ubuntu with no luck. I eventually gave in and dug out an old MS/Win laptop, (I much
By Jon-G0MYW · #14026 ·
Re: Calibration quick one
Hi John That is true, however we have so many new users here and those that don¡¯t really understand the inner workings of this VNA, that a golden rule for this forum, as Dave did, is surely
By RandMental · #14025 ·
Re: Calibration quick one
So its better to have a few small calibrated sweeps rather than the whole spectrum? Cheers Kev 73s MM0KJG
By sidebores@... · #14024 ·
Re: Calibration quick one
Dave, I wouldn't say the wide band calibration is useless in all situations. The interpolation works pretty well when phase change vs frequency is slow, as is the case with short cables. Component
By John Gord · #14023 ·