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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

Thanks for the tip, Harold. I shall have a look. Based on the quality of the Smith Chart treatment, they must be excellent. Just hope others take advantage. Have a read of my QRZ page to find out what

#106": More On The Fourth Load VNA Trick @Jeff Anderson - 4 January 2020 - /g/nanovna-users/message/9158 Dear Jeff, Thank you very much for your most valuable information, by which

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...

Something is escaping me... there are a few reports of persons that are able to run nanovna-saver under Windows XP SP3 (as I have). But the API in kernel32 that the program complains to be unable to

On Sat, Jan 4, 2020 at 01:33 PM, gin&pez@arg wrote: Hi gin&pez > " > Therefore, the Absurdness does not belong to us, > but to VNA itself, because: > > (a) It considers by default that all the

@Gary O’Neil, N3GO /g/nanovna-users/message/9132 Dear Gary, Well, allow us, please, to remind you that we would not arrive at this - most spectacular, indeed ! - conclusion, if you

On Sat, Jan 4, 2020 at 11:24 AM, gary wrote: Besides the Steber article on the nanoVNA, there is an article on a "Simple Inexpensive Accurate Vector Impedance Meter" by Koehler on page 23 that

#106': On The Fourth Load VNA Trick @Jeff Anderson - 4 January 2020 /g/nanovna-users/message/9153 Hello, Thank you very much for interest in our work, and especially for quoting this

@Gary Can you help me to understand the reply from g&p? -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik, PD0EK

gin&pez, Please forgive me, but your writing style, in my opinion, contains much too much extraneous "verbiage," and it is difficult for me (and probably others) to wade through the unnecessary words