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Re: Calibration Algorithm #calibration
Garry The issue is the new proposed vna formula and the old SOL calibration approach are mathematically the same. Apart from discovering an elegant notation nothing will change in my view What you
By Erik Kaashoek · #8536 ·
Re: QEX Magazine #tutorials
Is this the NanoVNA's Great Nothingburger Thread of 2019 ? After all this fuss, bugger all of any use has come out of it. All that was needed was for someone to say "hey, I read the article. It seems
By Andy <punkbiscuit@...> · #8535 ·
Re: Calibration Algorithm #calibration
Hello Erik; My understanding is that this begins as an entirely closed form solution with a computationally exact result. All uncertainties (including those included in the standards) are accounted
By Gary O'Neil · #8534 ·
Re: QEX Magazine #tutorials
Phil, I get the annual publications DVD instead of subscribing because it¡¯s cheaper. I¡¯m also an RSGB member but buy those digital issues on DVD, too. So I don¡¯t have the current QEX issue
By K4FMH · #8533 ·
Re: New version of NanoVNA-Saver: 0.2.1
Hi Rune, Thanks for a great interface program for the NanoVNA. I have run into a problem I do not understand in carrying out a calibration using nanovna-saver 0.2.1 (also 0.2.0). I have the frequency
By Dick W0QM <richard.n.grubb@...> · #8532 ·
Re: Choke Series resonant frequency measurement
The resonance of a choke is measured by connecting it to the S0 port.? You select Smith chart and, with the frequency at a low value you read the inductance on the screen, with the plot being a dot
By Bob Albert <bob91343@...> · #8531 ·
Re: Marker Menu ??
Hi Larry, I can explain stop, start and centre but not span: Essentially, these commands allow you to set the frequency range or span using the position of the active marker. Make sure the current
By Larry Rothman · #8530 ·
Re: Marker Menu ??
Never mind, I finally found the information I was looking for. As usual, as soon as I post a question, I find the answer. Larry n0sa
By Larry Naumann <n0sa@...> · #8529 ·
Re: Looking for firmware with battery indica
sorted it,i followed the first link,realsed its the bottom one thats the latest on the firmware list pdf.
By Paul M3VUV · #8528 ·
Re: QEX Magazine #tutorials.
I'm confused.? How is that legal??? The following quote is taken directly from the terms of use at librarycat.com: "You may not post any content that violates copyright or other intellectual
By Dave AB7E · #8527 ·
Re: errors of "error" models
#90.02 : A Comment on [SAMoEEiVNAM] Technique - #90.00 : A Practical Introduction to our -Second- Arithmetical Method of Error Estimations in VNA Measurements : [SAMEEVNAM] 22 December 2019 -
By gin&pez@arg · #8526 ·
Re: QEX Magazine #tutorials
Hi Frank, When an option of ARRL membership was a CD received at the end of the year, then I took that option. This was an economic choice as the CD contained not only QST but NCJ (no interest) and
By Philip Stevens · #8525 ·
Marker Menu ??
I am a bit confused on the Marker Menu and the Markers in general. I know I can turn them on and off and move them and read the values on the screen. I know that I can click on one and then the others
By Larry Naumann <n0sa@...> · #8524 ·
Re: NanoVNA connected to Amazon Fire tablet
On Sun, Dec 22, 2019 at 07:07 AM, Lawrence Macionski wrote: I bought the Amazon Fire Tablet August 23, 2019 --- Exactly 4 months ago... ===============================================================
By hwalker · #8523 ·
Re: Choke Series resonant frequency measurement
Will the reactance of NanoVNA's channels influence the resonant frequencies of the choke, or the calibration process is removing this influence? If the influence is present, what method will minimize
By Ady, YO2NAA · #8522 ·
Re: errors of "error" models
#90.01 : Final Conclusion - #90.00 : A Practical Introduction to our -Second- Arithmetical Method of Error Estimations in VNA Measurements : [SAMEEVNAM] 22 December 2019 -
By gin&pez@arg · #8521 ·
Re: QEX Magazine #tutorials
All, Just know that *soon* all ARRL members will have electronic access to QEX and NCJ issues via the ARRL.org website, although print issues will still require a subscription. And, be aware that
By K4FMH · #8520 ·
Re: NanoVNA connected to Amazon Fire tablet
I bought the Amazon Fire Tablet August 23, 2019 --- Exactly 4 months ago...
By Larry Macionski · #8519 ·
Re: Calibration Algorithm #calibration
Hi Gary, Actually, it is the objective of calibration to normalize the measured standards to their imperfect definitions, not to the ideal boundaries. For example, let's say the actual short standard
By Jeff Anderson · #8518 ·
Re: errors of "error" models
#91: Elevating a [NanoVNA] System to an Instrument of Laboratory Level Hello, Allow us, please, to declare that our research efforts here have to do with our curiosity regarding the investigation of
By gin&pez@arg · #8517 ·