Re: errors of "error" models
2 - @Gary O'Neil, N3GO 15 December 2019 - /g/nanovna-users/message/8238 Hello again, We are terribly sorry but we forgot to emphasize enough that a model such this one is totally
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gin&pez@arg
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#8240
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Re: errors of "error" models
@Gary O'Neil, N3GO 15 December 2019 - /g/nanovna-users/message/8238 Dear Gary, Not at all. Would you read, please, our related message: #85: On the Formation of a Virtual Port 15
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gin&pez@arg
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#8239
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Re: errors of "error" models
GIN& PEZ; Do your assertions in: #84: On the Virtuality of the "Measurement Port" signal that you are abandoning your pursuit of a two port model of a ¡°LeastVNA¡±, or is it simply a statement that
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Gary O'Neil
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#8238
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Re: errors of "error" models
#85: On the Formation of a Virtual Port Hello, Allow us, please, to somehow explain the formation of a Virtual Port facupov, in our sow. Well, since we can always introduce the "reflection" relation:
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gin&pez@arg
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#8237
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Homebrew Female SMA standards and T-Check
A few years ago I made an open and a short female SMA standard for calibrating my HP 8753C VNA (for the load I used a very nice 85052 female 3.5mm load). I never used the open and short above about 30
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Jeff Anderson
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#8236
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Re: Increasing measurement range (ohms) ?
As measured impedance get significantly higher or lower then 50 ohms the variance in bridge resistors create greater errors.
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roncraig1@...
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#8235
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Re: Cases
I bought a case from the eBay source Terry referenced. I did have fo file one edge to get the proper fit, but otherwise, no problems. -ed, k9ew
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Ed - K9EW <k9ew57@...>
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#8234
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Re: Cases
I had 3d printed some cases and some people were happy, some were not. Seems these things are all not the same and sometimes you need to shave some of the holes to make it fit
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Frank S
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#8233
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Re: Cases
I typed nanovna case into google and hit the first ebay listing that came up https://www.ebay.com/itm/NanoVNA-Case-/174039026524 Note that there is no gap between nano and vna in the search term. --
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Terry VK5TM
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#8232
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Re: Increasing measurement range (ohms) ?
Hi Dave, Your email is working now? I read in forum his email was worng. I tried send emal two times but notl answer. Delay between two mail several weeks. Many expert help me a lot. Including you, on
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pgc1682@...
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#8231
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Re: Cases
Try Etsy ... I bought a 3D printed case from a guy there and it works fine for my unit. 73, Dave?? AB7E
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Dave AB7E
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#8230
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Re: Cases
Thanks for the reply. I tried eBay and eBay Canada and all that comes up is the whole units not just a case for an existing unit. I searched nano VNA case and VNA case.
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Kevin B
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#8229
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Re: Cases
Search Ebay, there's plenty of them. Do note, however, they might not fit your particular model, as there are slight differences between the original "VNAs' and the clones regarding physical size and
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Terry VK5TM
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#8228
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Re: Cases
see msg #322. Search under vna cases or 3D cases.
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alan victor
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#8227
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Cases
New guy here. I can't seem to find any cases for sale, does no one make/sell them? I found some that come as a kit with a case but can't seem to find just a case. Thanks Kevin
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Kevin B
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#8226
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Re: errors of "error" models
#84: On the Virtuality of the "Measurement Port" Hello, Allow us, please, to inform you that since in our sow we see the "Measurement Port" facupov as the Virtual Port of the irreversible,
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gin&pez@arg
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#8225
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Re: Increasing measurement range (ohms) ?
The best solution is to make a transmission measurement. That allows high impedances to be measured better than a reflection measurement I don¡¯t know the tolerance of the 49.9 ohm resistors, but
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Dr. David Kirkby, Kirkby Microwave Ltd
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#8224
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Re: Increasing measurement range (ohms) ?
Just for fun I have ordered one of these 1:9 baluns for a test. Won't be here until next year though. It's a cheaper version, so I'm not sure if it's gonna be much good, but what the heck, it's only
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Andy <punkbiscuit@...>
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#8223
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Re: Calibration settings for NanoVNA-saver using SDR-Kits BNC calibration kit
Hi Kurt, Thanks for the very detailed manuals. It will be help for me a lot. It requires more time to understand everything. 73,Lajos
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pgc1682@...
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#8222
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Re: Increasing measurement range (ohms) ?
I always read the forum online, not as emails, so it's easy to scroll up and refer to the original post of a thread... The stated use-case is measuring the feed-point impedance of end-fed half-wave
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KV5R <kv5r@...>
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#8221
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