Re: US based Ebay seller claims he is selling v3.4 NanoVNA - true?
A recheck of the EBAY Listing indicates he has 0 units left.. Want to bet he returns with changes in the listing
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Larry Macionski
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#10924
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Re: US based Ebay seller claims he is selling v3.4 NanoVNA - true?
The case hides the battery size. I have a pre-3.4 and I upgraded to 1.5Ghz.. THe spec is showing a 400mah battery .. Not 3.4.. I find that 9-5 US time, +/-2 hours he's in the USA in his office.. When
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Larry Macionski
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#10923
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Re: nanoVNA Maximum Impedance Measurement (Folded Dipole example)
Using NanoVNA SAVER, I calibrate and Sweep using 144Mhz Start 148Mhz end.. and you can set sweep x4.. that's 101 points per MHZ.. It takes a but longer.. The display does look real pretty and if you
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Larry Macionski
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#10922
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Re: Serendipitous Stylus
I find that a cotton-tipped swab makes a nice stylus for the nano-VNA touch screen. Dana K8YUM
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Dana Whitlow
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#10921
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Re: nanoVNA Maximum Impedance Measurement (Folded Dipole example)
I didn't finish the impedance: The RF Z of the R+jX would be about 420 Ohms. -- Chuck, W5USJ
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Chuck Carpenter
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#10920
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Re: nanoVNA Maximum Impedance Measurement (Folded Dipole example)
Soaring Spitfire, I doubt that your resistors would measure 200 Ohms at 2 meters? At DC the resistance will look OK. With any length of leads and some distributed capacitance the resistors will look
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Chuck Carpenter
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#10919
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Re: larger screen models same hardware?
Hi Kayak, Since you're new to this, please go through the forum's WIKI and FILES areas. All your questions have answers there... The links are at the bottom of every email sent out by the forum but if
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Larry Rothman
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#10918
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Re: PL-259 calibration
You brain must be really overloaded if you need confirmation about this! So I'll help you, yes, you are right. But I've seen at least two websites about experiments with optimal resistor topology for
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Reinier Gerritsen
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#10917
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Re: PL-259 calibration
Yes Kevin - you are on the right way. 1/ (1/200 + 1/200 +1/200 + 1/200) = 50
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Steen Rudberg <steen.rudberg@...>
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#10916
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larger screen models same hardware?
hi all, new to this. I have a question. are there larger screen nanovna and with the exact same hardware and reliability etc? if so, can someone post a link? thanks
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Kayak
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#10915
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Re: PL-259 calibration
One last one.... My brain has been overloaded lately so just wanted to confirm. If I use 4 parallel resistors for better accuracy as mentioned earlier, 4, 200 ohms will make it 50 ohms correct.
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Kevin B
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#10914
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Re: nanoVNA Maximum Impedance Measurement (Folded Dipole example)
Yes. I too have found out that balun is necessary when measuring antennas.
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Leif M
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#10913
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Re: Document available from Element14 -Tools & Test Equipment I: RF Spectrum Analyzer
While you are looking at TEK info, take a look at their vna tutor and support info. Excellent. Alan
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alan victor
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#10912
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Re: US based Ebay seller claims he is selling v3.4 NanoVNA - true?
I'd say the original poster's question regarding whether the item he was considering purchasing is a NanoVNA-H v3.4 has been answered, and the eBay seller complaints have gotten off-topic. IMHO,
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hwalker
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#10911
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Re: US based Ebay seller claims he is selling v3.4 NanoVNA - true?
I just bought a nanovna-h with 4" display from amazon with version 4.2 PCB. IT works very well so far and only took two days to get it. Clarence, NT7V
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Clarence Peckham
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#10910
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Re: US based Ebay seller claims he is selling v3.4 NanoVNA - true?
Well, it's like this. Somewhere in the bowels of Guangdong province, someone rips a promising circuit. A manufacturer gets hold, orders up a slug of boards and parts, and makes up a whole lot of
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Don Latham <djl@...>
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#10909
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Document available from Element14 -Tools & Test Equipment I: RF Spectrum Analyzer
Received an email -sponsored by Tektronics- Nice start for a NEWBIE. https://www.element14.com/community/docs/DOC-94520/l/element14-essentials-tools-test-equipment
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Larry Macionski
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#10908
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Re: US based Ebay seller claims he is selling v3.4 NanoVNA - true?
Yes and to add insult to injury MANY greedy dishonest sellers after they reach a mob of negative feedback or get banned from e-bay simply create a new account and keep on going about their crooked
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Gedas
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#10907
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Re: US based Ebay seller claims he is selling v3.4 NanoVNA - true?
Good morning.. 1st snow covering the ground today.. #1 I bought an assortment of SMA adapters from Ebay. About 50 adapters, $54 purchase. all same seller. SMA M/F to BNC/UHF/N DEC 7th,2019. Nothing
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Larry Macionski
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#10906
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Re: US based Ebay seller claims he is selling v3.4 NanoVNA - true?
Very true, ebay now only lets you see the past 12 months of feedback activity, but the whole lifetime information was still being kept in their public database, but just not accessible though their
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nanovnagroup@...
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#10905
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