Re: Determination of Soil Characteristics with Nanovna
The soil conductivity and permittivity change with frequency and over a very small area. Rudy Sevens wrote a paper on how to model a low dipole over ground and then change the ground characteristics
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Roger Steyaert <k7rxv@...>
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#15421
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Re: NanoVNA firmware user interface mod
#mods
Great, now you can set minimum and maximum in SWR, now it works. There are also many markers, more than three. It is perfectly. I only use this program. it is very stable, I would say, it works for me
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DMR <bryonikater@...>
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#15420
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Re: Vertical OFFSET
#consolecommands
#improvement
#firmware
#measurement
#nanovna-h4
John, Thanks. Nice to read that it is possible what I was looking for. Sure. I discovered that it is possible to position the reference point not only on the gridlines, but also between them. However
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Kees <bostulpje@...>
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#15419
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Re: SMA Torque Wrench
Yes. Finger tight leaves small gaps around the fittings which act as HF cavities. The material has to be stressed into plastic deformation, which limits the number of installs to ten times for one
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Helmut Wabnig
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#15418
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Re: SMA Torque Wrench
As a mechanical engineer I have known about torque wrenches for years There have been studies of their accuracy and it can be said that overall it is generally +/- 50 percent. There are several
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Paul W8SBH
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#15417
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Re: SMA Torque Wrench
Usually, yes! RF connectors that are insufficiently tightened usually work loose with even trivial handling, leading to poor (and intermittent) shielding integrity, mysterious resonance dips that come
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Dana Whitlow
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#15416
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Re: SMA Torque Wrench
This offer is just for the USA. The rest of the world can buy for a similar price from: THGS Mxita SMA drehmomentschl¨¹ssel RF stecker ?ffnung 8MM https://de.aliexpress.com/item/32972795189.html It
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Rudi
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#15415
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Re: SMA Torque Wrench
Is anything more than finger tight really necessary? Aldo W2AGC
By
Aldo Cugnini
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#15414
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Determination of Soil Characteristics with Nanovna
Hi I am new to the Nanovna and I apologise if this question has be asked before. I want to measure soil conductivity and relative permittivity. Are there standard electrode dimensions and positioning?
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John Moyle <Drjmoyle@...>
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#15413
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SMA Torque Wrench
Hello group, I found this 8mm torque wrench on eBay: https://www.ebay.com/itm/402050311301 It is factory preset for 0.59N-m which is just below the upper limit for brass SMA connectors. It seems to do
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Dave Merrill
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#15412
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Re: NanoVNA Saver 0.3.3 or 0.3.4
Can someone please send me the link to the Windows 10 64 bit Nano Saver 0.3.6 EXE file? Thanks *Clyde K. Spencer* lu8eff@...> wrote:
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Clyde Spencer
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#15411
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Re: NanoVNA USB C connector is stuck
Anne, with your great sense of humor this will only be a minor setback. From someone who can usually find their hammer. Good luck! Allen KI4QCK
By
Allen Hill
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#15410
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Re: NanoVNA firmware user interface mod
#mods
I've re-enabled SD card Igor, though this is the compile without the external 32k xtal enabled - for now. I've not yet added the dual graph DMR wants, but will get there. I've done a lot of other
By
OneOfEleven
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#15409
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Re: nanoVNA vs nanoVNA-F vs nanoVNA-H What is the difference??????
The answer is in the WIKI, see the link below in your mail. A lot of answers are there. Kind regards, Arie Op 20-7-2020 om 17:16 schreef Lawrance A. Schneider:
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Arie Kleingeld PA3A
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#15408
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Re: nanoVNA vs nanoVNA-F vs nanoVNA-H What is the difference??????
Larry, I'd start with the wiki: /g/nanovna-users/wiki 73! Mark KA6WKE Latest Video: https://ka6wke.net/gmail Website: https://www.ka6wke.net llaassllaaass@...> wrote:
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Mark Schoonover
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#15407
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nanoVNA vs nanoVNA-F vs nanoVNA-H What is the difference??????
Hello, I have asked a number of individuals separately and received no replies. I keep reading about new software, new firmware, new external options, new screen sizes, ..... BUT, what is the basic
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Lawrance A. Schneider
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#15406
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Re: NanoVNA USB C connector is stuck
If this is a H4 model the plastic case overhangs the USB port and should be removed and filed down. If the stuck USB plug is with the H model I would dispose of the cable. The USB cable that was
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Mike N2MS
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#15405
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Re: NanoVNA USB C connector is stuck
Thanks for replies. Luckily I do not have a case , and that is the only reason I need to unplug it so I can build one. The USB C connector went in with noticeable click. Anne PS Not to worry , I
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Anne Ranch <anneranch2442@...>
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#15404
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Re: NanoVNA firmware user interface mod
#mods
If it did save 6k of flash, I'd be able to add a proper small (minor flash size usage) spline interpolation routine that would be far better than linear interpolation, so I'll look at that then at
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OneOfEleven
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#15403
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Re: NanoVNA firmware user interface mod
#mods
I can suggest one thing (want test result, but not found time for it): in code sin and cos functions used only in If you remove this use - it allow save ~6-7k flash. sin cos functions use big size
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DiSlord
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#15402
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