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I just see your comment, and since I happened to have a VNA calibrated, I stuck an Agilent short from an 85052B 26.5 GHz 3.5 mm calibration kit on the test port via a special adapter needed for this.

Thank you Luc, very helpful! Randy NC8U

A slight clarification -- Hand was referring to errors that were *not* corrected with the error correction process. Noise is one of those errors. Imperfect characterizations of the standards are

I cant upgrade my VNA-H FW 0.2.3-2 20191018 with new releases after October 2019 with DFuSe 3.0,6 from Google disk by two reasons: Have got Upgrade successfully with NanoVNA-H_20191125.dfu, but old

On Sat, Jan 4, 2020 at 10:11 PM, Gary O'Neil wrote: Hi Gary, > > "It is unbelievably incredible that, since its > invention, so much emphasis has been placed on VNA calibration with maximized >

Thanks Luc for taking the time to write and translate this document. Very well done... Roger

From: KV5R Umm, I love to, but no... U.Kansas makes them publicly available (not restricted to student accounts), but re-packaging and posting them, without written permission, would not be

Where do you want the radiation to go? Biquads typically have strongest pattern broadside to the bowtie. Mounted flat on the ceiling, that would be primarily to zenith. Are you planning to communicate

Umm, I love to, but no... U.Kansas makes them publicly available (not restricted to student accounts), but re-packaging and posting them, without written permission, would not be appropriate or legal.

This will mainly interest the DUTCH speaking members I posted two videos on YouTube with my presentation on the NanoVNA Part one is about complex impedance, transmission lines, S-parameters and the

Amazon has become a disaster. You never know from whom you are getting the product even dough you might have purchased from a specific seller and saw a specific picture of the item. If the sale is

It is about as good as you can get without a good TDR instrument. The objective of looking for high Z resonance peak at quarter wavelength is to verify Vp. Stray reactance on the 50 ohm port will

KV5R, They are the handout for the courses on antenna and feedlines. As such they are often read this, evaluate this question. If your going to suck those files up, then get the books that go with

Folks, if you want these please remember that you may be accessing a system that is supposed to be restricted to University of Kansas students who pay for the courses associated with these files.?

Thanks, Dave! If you remove the filename from that link, e.g., http://www.ittc.ku.edu/~jstiles/723/handouts/ , there's an index of over 300 RF engineering course files there! I collected them all...

Many VNA's use a wheatstone bridge (few use V/I measurement). A wheatstone bridge has a design Z0 for which it provides most sensitivity. Z=(R-Ro)/(R+Ro) This graph shows the output of the bridge

Gary, The point Jef wants to make is that above statement is NOT true for well characterized but non perfect calibration standards. The characterization (polynome) will describe where for instance the

GIN&PEZ, Erik, Jeff, et al; Absurd and it's derivatives is probably not the most descriptive of the points being made. Consider this a trigger word that translates with emotional overtones. As all of

On Sat, Jan 4, 2020 at 03:55 PM, gin&pez@arg wrote: Hi gin&pez: > > After that said, also allow us, please, to consider now that our way to use > this mathematical model, that is * w i t h o u t * the

Alan, THANK YOU, I have to re-read and save this and give it a whirl to understand it better. I’m a visual guy, so I have to see it before I can understand and believe it... My interest is mainly in