Re: Calibrating to a long coax?
#applications
#calibration
#measurement
I respectfully disagree. My NanoVNA was calibrated from 2 to 50 MHz using NanoVNA Saver. Then I measured a 20M dipole at the feedpoint and saved the results as an S1P file . I added 55 feet of RG58 to
By
Roger Need
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#13616
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Re: NanoVNA dealers in Europe?
We have a couple of small dealers selling them.
By
Ian Bowman
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#13615
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Re: What is the latest hardware version of NanoVna
#buying
Yes, intended to put "(small screen)" after SAA ...
By
Dragan Milivojevic
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#13614
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Re: Trouble buying from China
Stevepilot; It was being held. Apparently, no aircraft cargo space was available until just a very few days ago. -- *Mike* , K0JTA /g/Visible-Cell-Phone ?\_(¥Ä)_/?
By
Mike K0JTA
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#13613
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
I would say NO. Sorry to say, but have worked with VNA's for 30 years and as soon as you come near 1/8 wavelength the measurement errors are taking over. You know, in the analyzer the matrices that
By
sj@...
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#13612
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Re: What is the latest hardware version of NanoVna
#buying
Sorry the- H4 has a bigger screen and a lot of extra's in DiSlord firmware , I think you mean the H. Op 19-5-2020 om 17:27 schreef Dragan Milivojevic:
By
Jos Stevens
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#13611
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Re: Calibration standards - pl-259?
Calibration using SO-239 or PL-259 connectors is marginally useful at lower frequencies like the HF band because it is not an impedance controlled connector. The link below is the only commercial set
By
Roger Need
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#13610
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Re: Trouble buying from China
Question is Mike - why from 6th May to now to get to USA ? Hong Kong is the problem and has been pre Covid too :(
By
stevepilotltd
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#13609
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Calibration standards - pl-259?
Does anyone have a source for a set of calibration standards on PL-259 / 239 connectors? Yes, I know I could ¡°make them¡±, but I¡¯d rather buy them! ;) -- Regards, Chris
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Chris K2STP
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#13608
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Re: What is the latest hardware version of NanoVna
#buying
Way too expensive. The different versions are explained in the wiki: /g/nanovna-users/wiki Choice is practically between 3 versions: F (large screen), H4 latest revision by Hugen of
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Dragan Milivojevic
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#13607
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Re: Is Gen11.TAOBAO nanoVNA upgradeable to 1.5GHz
Hi Dave. You can find the schematics in the Wiki in the Documentation section. regards Bert
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Bert W
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#13606
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Re: What is the latest hardware version of NanoVna
#buying
Then I would advise the -H4 Jos Op 19-5-2020 om 14:31 schreef Bob Kircher:
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Jos Stevens
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#13605
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Re: Is Gen11.TAOBAO nanoVNA upgradeable to 1.5GHz
Hi Bert thanks for the hardware information. However .... I don't see some of the resistors mentioned on the only schematic of the nanoVNA (12/29/16 @11:31AM) I can find. I was interested to see which
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Dave B
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#13604
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
I'd say that there is another requirement - range used for SOL calibration and range used for measuring should be identical! More precisely, calibration points and measuring points should be the same.
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Miro, N9LR
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#13603
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Re: What is the latest hardware version of NanoVna
#buying
No matter which one the cost is so low not worth looking for lowest cost bad clone. You will be happiest with the current Hugen NanoVNA-H the gold standard as I understand it. Buy from Amazon or other
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Bob Kircher
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#13602
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Re: What is the latest hardware version of NanoVna
#buying
/g/nanovna-users/wiki#Hardware-versions
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Oristo
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#13601
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What is the latest hardware version of NanoVna
#buying
Hi to all I would buy NanoVna but i'm little confused :) There are many version H- F....?? Any Advice ? Thanks
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Andrea
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#13600
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NanoVNA dealers in Europe?
With all the China problems, are there any NanoVNA dealers in Europe?
By
namerati@...
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#13599
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Re: Trouble buying from China
I ordered pcbs that were ready at the end of March, they too got returned to the supplier for "security reasons". Reshipped 4th April and they are still sitting in some warehouse in Shenzen waiting on
By
Terry VK5TM
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#13598
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
Yes, assuming the antenna is connected at exactly the same point as your open, short, load were connected. If there's an additional "pigtail" at the antenna or anything like that, that will have an
By
Jim Allyn - N7JA
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#13597
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