SAA-V2 with bad SMA's from Amazon and false battery run time
#adapters
#battery
Hello all, I purchased a SAA-V2 from Amazon's seller Seesii and BOTH the SMA's are bad or wrong size or something? I can get about 3/4 of a turn before it stops acting like wrong thread count so I
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N8AUM
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#17445
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Re: Writing nanovna results to csv file
#nanovna-saver
Hi I just joined the list. I am brand new to VNA's and especially to s1p/s2p style files. Is there a way to parce the data? When I open an s1p file in wordpad, I see 101 frequency points, each
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Colin McDonald
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#17444
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
Dave: What program do you favkr for the interconnect Thanks. Ed McCann AG6CX
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AG6CX
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#17443
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Re: Writing nanovna results to csv file
#nanovna-saver
\ Well, Keysight (nee Agilent, nee HP) also has PNAs and XNAs these days, too <grin> There are VNAs that use only diode detectors (look up 6-port analyzer) - they work sort of like the 3 meter
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Jim Lux
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#17442
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
R&L electronics - bought on recommendations of people here. It worked right out of the box (nicely packaged) within one week of purchase. I bought on sale and got the 4" version. Have tuned my 6M yagi
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D. Scott MacKenzie
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#17441
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
OK cool ty for the reply I'll check it out. Now that I've got that out of my system... Lol I still have plenty of reasons to have both so I do want to get a good functional nano vna
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Brandon Parker <bmanthug@...>
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#17440
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
R and L electronics at Randl.com is an authorized dealer in the us.
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Tripp, WT5A
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#17439
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Re: Writing nanovna results to csv file
#nanovna-saver
I have been saving s1p and s2p files from Saver and then re-save them as .txt files. In Excel I import external data in the .txt format and delimit using spaces. This works well for using S21 Thru and
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WB2UAQ
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#17438
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
Sorry but that's not the case man. Don't get me wrong it's useful. But my ability to understand it' is not the issue. My issues with it are the lack of morals by the people that sold it. I have a
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Brandon Parker <bmanthug@...>
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#17437
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
Sorry you had that experience. Likely, you did not take the time to learn how to use the NANOVNA!! It is a *FAR* more capable instrument than anything MFJ offers at 4X the price, but it is not just an
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W0LEV
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#17436
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
I own a Mano vna and I threw it in the toolbox and just paid the 360 bucks for the mfj with the wall wart without hesitation. Nano vna is junk. I have had nothing but problems. I've boughten two now
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bmanthug@...
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#17435
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
Don't forget, the NANOVNA also connects to a PC as does the Rig Expert units. I usually use mine connected to the PC. Dave - W?LEV [email protected]> wrote:
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W0LEV
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#17434
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
I have a MFJ-259B, A Rig-Expert AA-55 Zoom and a nanoVNA-H. Each one is useful depending on the task at hand. I use the MFJ-259B when adjusting my manual tuner because the needles quickly respond to
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Roger Need
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#17433
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Re: NanoVNA vs. MFJ-259B Antenna Analyzer
Not just MFJ. RigExpert too!
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ve3zt
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#17432
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Re: Two (joined) cable calibrate and DFU firmware upgrade
Ted I struggled with trying to get dfu-util to see my device even though it installed the device drivers. I couldn¡¯t get it to work on a mac but was able to on windows 7 (should also work on 10)
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Vince Rooney
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#17431
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Re: Resonate frequency of lossy networks... Simple One...
#circuit
Strictly speaking, there should be bounds on the R,C,L terms so they are less than one. Otherwise a second order system, a tuned network which must posses two memory components vanishes. Consider if R
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alan victor
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#17430
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Re: Resonate frequency of lossy networks... Simple One...
#circuit
What will happen with resonant frequency when R>C/L and value under SQRT becomes negative? Will that create a black hole and the world as we know it will collapse in it? :) SPICE simulation shows
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Miro, N9LR
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#17429
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Re: Resonate frequency of lossy networks... Simple One...
#circuit
Alan said: With very large resistance you effectively have current generator so you can plot voltage on the RLC circuit :) In my simulation, I used ideal voltage source and plotted the current -
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Miro, N9LR
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#17428
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Re: Resonate frequency of lossy networks... Simple One...
#circuit
And of interest, peak magnitude and zero phase do not always align except for the infinite Q case... It is best to observe the definition as the imaginary part of the function goes to zero implies the
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alan victor
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#17427
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Re: Two (joined) cable calibrate and DFU firmware upgrade
I've purchased some well made cables with SMA males on each end from Amazon to replace the jumper cables that come with a typical basic NanoVNA - as others have mentioned on here, the quality control
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Brian
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#17426
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