Re: Trouble buying from China
Buying is not a problem. Getting it from china to the US is a problem. A lack of available freight aircraft. I noticed that DeepElec has now gone to DHL for shipping rather than use the slow route.
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avvidclif
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#13555
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Re: Nanovna vs Antenna Analyzer
Sorry not relavent here.
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MVS Sarma <mvssarma@...>
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#13553
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Re: Nanovna vs Antenna Analyzer
I receved one that reached india in march and no issues. . I cut the outer cover and disposed off. I am safe, so far. Lol Sarma vu3zmv [email protected]> wrote:
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MVS Sarma <mvssarma@...>
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#13552
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Trouble buying from China
I am hearing that some people are not able to buy NanoVNA units from China due to quarantine related issues... has anyone here encounterd this?
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namerati@...
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#13551
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Re: Nanovna vs Antenna Analyzer
I'd think if you did a cal for the typical hf range of freq (1.8Mhz to say 30Mhz) you'd likely be OK. The swr reading may be off a little but when tuning an antenna you're looking for the swr dip. The
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Ron Spencer N4XD
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#13550
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Re: Nanovna vs Antenna Analyzer
Hi Mark and Bob, The real reason is: The NanoVNA, due to it's very limited internal memory, has only 101 calibration points - by far not enough for a GHz wide frequency span: Each point is some 10 MHz
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DJ7BA
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#13549
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Re: Nanovna vs Antenna Analyzer
Mark, Bob is right, especially if you are doing measurements right at the NanoVNA connector. The interpolation of calibration points taken over a wide span works pretty well if connection lengths are
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John Gord
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#13548
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Re: Nanovna vs Antenna Analyzer
You don't have to keep recalibrating.? Once done, you save the parameters and recall it each time. Just do the calibration over the entire frequency range and you are done calibrating. Bob
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Bob Albert <bob91343@...>
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#13547
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Nanovna vs Antenna Analyzer
Put my new nanovna-H4 to work this afternoon tuning up a new MFJ Cobweb. Prett amazed at this $50USD device. Every time I changed bands I did a calibration. When I had an antenna analyzer I never had
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Mark Schoonover
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#13546
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Re: #buying #nanovna-f
#buying
#nanovna-f
Thank you to all for the replies. I have purchased a NanoVNA-H4 from Gigaparts. It seems to be a pretty nice unit. It came in a deluxe box with three loads, two USB-C cables, two short SMA-terminated
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Russell C. Nixon
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#13545
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Re: Are any of the NanoVNA sold on Amazon any better or worse than any others? Is there a better U.S. site to order from?
I might add that it is not in a case. [email protected]> wrote: -- Paul W8SBH ?? ?? ???? (this too shall pass)
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Paul W8SBH
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#13544
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Re: Are any of the NanoVNA sold on Amazon any better or worse than any others? Is there a better U.S. site to order from?
Hans, I believe you may be correct. You've got sharp eyes my friend. ?___ Sent from my two way wrist watch 73 de W3AB/GEO?
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GEO BADGER
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#13543
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Re: Are any of the NanoVNA sold on Amazon any better or worse than any others? Is there a better U.S. site to order from?
Yes, I use mine to make HF and 2 meter antennas too. WO4ROB, Rob WO4ROB ________________________________ Sent: Sunday, May 17, 2020 12:22:07 PM To: [email protected] <[email protected]>
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Robert Cloutier
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#13542
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Re: Are any of the NanoVNA sold on Amazon any better or worse than any others? Is there a better U.S. site to order from?
IMHO you are both wrong... The pictures show the VNA with the short and open screwed on. The load is on one of the cables via a F-F adapter. As far as I can make up from the pictures the set is
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hansfree <hans@...>
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#13541
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Re: Are any of the NanoVNA sold on Amazon any better or worse than any others? Is there a better U.S. site to order from?
Thanks, Geo I thought the connectors looked unusual in the photo. I'm sure I already have the adaptors in my radio parts box. I report back how this unit works when I get it. All I want to do is
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Michael Docy
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#13540
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Re: Are any of the NanoVNA sold on Amazon any better or worse than any others? Is there a better U.S. site to order from?
Michael, You'll need 2 SMA/F - SMA/F adapters to use that one. ?___ Sent from my two way wrist watch 73 de W3AB/GEO?
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GEO BADGER
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#13539
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Re: Are any of the NanoVNA sold on Amazon any better or worse than any others? Is there a better U.S. site to order from?
Here is the cheapest one I have ever seen on Amazon: https://www.amazon.com/gp/product/B085C7B64F/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1 $24.89 on Amazon. It doesn't include an open or short
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Michael Docy
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#13538
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condenser RF ESR readings (for loop antenna) with nanoVNA
I am making a loop antenna very similar to the OM0ET model, but adding capacitors with switches to add the 60 and 80m bands. I used the nanoVNA to see the resonance and I achieved my goal but with
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FRANCISCO JAVIER MURIEDAS ARGUMOSA
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#13537
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Re: Down Load from the NANOVNA
Thank you, Larry and DiSlord. I must have read that 50 times, and it never got to my memory with out errors. Problem resolved. Thanks, Glenn W3WTE
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w3wte
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#13536
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Re: External Down/Up converters for NanoVNA/2/SDR
Just did the test Two mixers rated for 2GHz-4GHz with IF ports 10MHz-2GHz Connect the nanoVNA CH0 and CH1 to the IF ports, LO ports together to a generator at 2350MHz. Filter to measure connected to
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Erik Kaashoek
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#13535
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