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Re: Calibration standards - pl-259?
I got a set from Amazon for like $15 US. 2 so239 and 2 pl259
By rennwyll@... · #13626 ·
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:
By Tony. VE3DWI · #13625 ·
Re: Captured in the wild #bying #internals #buying
Thanks Roger!
By Jason Schlager · #13624 ·
Re: Captured in the wild #bying #internals #buying
Here is a photo of a Hugen 3.4. looks the same as Jason's
By Roger Need · #13623 ·
Re: Captured in the wild #bying #internals #buying
Close up of the other one
By Jason Schlager · #13622 ·
Re: Captured in the wild #bying #internals #buying
Close up of white one.
By Jason Schlager · #13621 ·
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 · #13620 ·
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 · #13619 ·
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
By pez@arg · #13618 ·
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 · #13617 ·
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 · #13616 ·
Re: NanoVNA dealers in Europe?
We have a couple of small dealers selling them.
By Ian Bowman · #13615 ·
Re: What is the latest hardware version of NanoVna #buying
Yes, intended to put "(small screen)" after SAA ...
By Dragan Milivojevic · #13614 ·
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 · #13613 ·
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@... · #13612 ·
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 · #13611 ·
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 · #13610 ·
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 · #13609 ·
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
By Chris K2STP · #13608 ·
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
By Dragan Milivojevic · #13607 ·