Re: Antenna tuning in field, calibration with SMA cal set followed by BNC and UHF adaptors
If you are tuning by SWR only, that won't change due to having the extra stuff between the nanoVNA and the DUT. The values of complex impedance etc will change, though, so if you are using them or
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John Scales KG8FX
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#29834
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Re: Totally Lost!
Can you tell me what the name of this file is or can you provide a picture of what I should be looking for? I have opened all of the folders that I have downloaded and again the files in the
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Bill WX2P
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#29833
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Re: Totally Lost!
You have to manually install the STM driver - it is in the dfuse package, if running Windows.? (Linux and Mac don't need a special driver). It will *never* be able to find the driver automagically! -
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Tim Dawson
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#29832
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Re: Antenna tuning in field, calibration with SMA cal set followed by BNC and UHF adaptors
The only way to properly measure an antenna is at the antenna initially.? Once you're happy with the antenna the coax can mostly be ignored and you should NOT change your antenna based on any
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Michael Black <mdblack98@...>
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#29831
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Re: Totally Lost!
SO! After almost a year and giving up I've now spent 2 days trying to make sense of this and still failing. I've followed the Beginners guide and when once I download and install "everything" it falls
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Bill WX2P
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#29830
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Antenna tuning in field, calibration with SMA cal set followed by BNC and UHF adaptors
Hi -- I would like to use the NanoVNA for measuring and adjusting antennas in the field for relatively casual POTA and other portable ham radio activities (e.g. tuning the loading coil on a vertical;
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Connie
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#29829
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Re: Measuring Air Capacitor losses
#general_vna
Thanks for checking, but as far as I can tell, none of the individual posts are archived It has also captured the "didn't pay" These are after it went South. I think Namecheap.com is trying to sell
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Mikek
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#29828
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replacement of the nanovna v2 display
hello everyone! I have such a problem: the screen of my nanovna v2 was broken. I ordered the same screen from aliexpress and got a big disappointment. The image on the screen is inverted and only half
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netcovali@...
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#29827
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Re: Measuring Air Capacitor losses
#general_vna
Mike, the *Internet Archive *seems to have captured /The Radioboard/, to be found at https://web.archive.org/web/20151201000000*/http://theradioboard.com/. Wait for a calendar to show, and then the
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G8DQX list
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#29826
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Re: Read/Writing calibration data from device memory/registry into computer
My device is Nanovna-F and I couldn't make dfu work with it.
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Ata
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#29825
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Re: Read/Writing calibration data from device memory/registry into computer
Even though this looks to be a solution to my problem, I am using Nanovna-F and I couldn't find dfu working with my device.
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Ata
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#29824
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Re: Measuring Air Capacitor losses
#general_vna
OK, no problem. Anyone that wants to email me about my last post, please do. Thanks for the info about measuring Q of a cap, I'm building a circuit between forum exchanges, when I get that working
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Mikek
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#29822
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Re: Measuring Air Capacitor losses
#general_vna
Mikek, I think this has gotten too far from the realm of NanoVNAs. I have sent you several private messages to try to take this discussion off-line, but I've not received a reply. If you want to
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Brian Beezley
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#29821
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Re: Measuring Air Capacitor losses
#general_vna
I finally got it to download and then opened. Is the L that is displayed before accounting for distributed capacitance? Do I add one wire diameter to my core diameter to get "Core Dia" (i.e. center to
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Mikek
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#29820
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Re: Measuring Air Capacitor losses
#general_vna
Yes, If I get within two feet of my coil at resonance, I can see the Q start to drop. I use about 10" of styrofoam to get the coil away from the Q meter, probably not far enough, but it's the best I
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Mikek
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#29819
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Re: Measuring Air Capacitor losses
#general_vna
I'm sure you're right, Jim. I think most experimenters grab whatever is at hand and press it into service as a coil form. No telling what its characteristics really are. At one time or another I've
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Brian Beezley
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#29818
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Re: Measuring Air Capacitor losses
#general_vna
On 10/11/22 7:21 AM, Brian Beezley wrote: > After much searching, I was able to locate D-2852, the ASTM standard for the styrene pipe coupling. As expected from the application, it does not contain
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Jim Lux
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#29817
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Re: Measuring Air Capacitor losses
#general_vna
Hi Brian, Those Qs are higher than anything I have made, However, I would like to see a real world case on PVC that has a higher Q than my so called styrene coupler. Can you run my coil? Dimensions
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Mikek
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#29816
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Re: Measuring Air Capacitor losses
#general_vna
After much searching, I was able to locate D-2852, the ASTM standard for the styrene pipe coupling. As expected from the application, it does not contain any electrical specs. Here's the description
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Brian Beezley
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#29815
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Re: White screen
Well, with the H version, the solder on the LCD's ribbon cable can sometimes crack and cause the white screen. I had this on one of my units. You need to VERY carefully run a thin wire under the metal
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Larry Rothman
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#29814
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