Re: Calibration standards - pl-259?
I got a set from Amazon for like $15 US. 2 so239 and 2 pl259
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rennwyll@...
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#13626
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
Why are the two measurements not taken in the same display format? One graph is in SWR one is in RL. Tony VE3DWI. [email protected]> wrote:
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Tony. VE3DWI
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#13625
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Re: Captured in the wild
#bying
#internals
#buying
Thanks Roger!
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Jason Schlager
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#13624
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Re: Captured in the wild
#bying
#internals
#buying
Here is a photo of a Hugen 3.4. looks the same as Jason's
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Roger Need
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#13623
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Re: Captured in the wild
#bying
#internals
#buying
Close up of the other one
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Jason Schlager
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#13622
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Re: Captured in the wild
#bying
#internals
#buying
Close up of white one.
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Jason Schlager
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#13621
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Re: Captured in the wild
#bying
#internals
#buying
Jason, It could be a genuine Hugen 3.4. Hugen posted that he does sell them with "sandwich" type construction instead of in a plastic case with the gift box. Roger
By
Roger Need
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#13620
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Captured in the wild
#bying
#internals
#buying
Captured in the wild. I am aware the white one is an inferior clone but the black one appears to have a newer pcb and has a version 3.4 screened on the pcb. Is this a genuine one? It has a different
By
Jason Schlager
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#13619
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
| On Tue, May 19, 2020 at 09:48 PM, <sj@...> wrote: = | | 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
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pez@arg
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#13618
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
Here is a file containing the R+jX comparison from the experiment above. Sweep at feedpoint and at end of 55 feet of RG58 overlay on top of each other. Roger
By
Roger Need
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#13617
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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
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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.
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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)_/?
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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
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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:
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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
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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 :(
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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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