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Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* NanoVNA Calibration Considerations and
By [email protected] Notification <nanovna-users+notification@...> · #1838 ·
Re: Early app for the NanoVNA
Hi Jeff, thanks for the shopping list :D I'll respond to each: 1) In the LogMag charts, each X-coordinate has a well-defined frequency. In the Smith charts, I would have to find the closest point of
By Rune Broberg · #1837 ·
Re: Early app for the NanoVNA
Hi Bob, the app launches a console window first, in which any error messages should appear. If you double-click to launch, that's probably the brief flash you're seeing. You could try opening a
By Rune Broberg · #1836 ·
Re: 1500 MHz
FYI - Following 75 Ohm version http://forum.vhfdx.ru/izmeritelnaya-apparatura/pribor-nanovna/msg369476/#msg369476
By RFy · #1835 ·
Re: 1500 MHz
Very informative, thanks, this thread leads to a mention of a 1GHz commercial version with a 4.3" display (see below) which in turns leads to its firmware which seems to have been ported for a
By Jose Luu · #1834 ·
Re: Don't rotate the SMA centre pin! But how do I avoid that?
Locking collar (or ring)? being the "loose nut" that holds things together.?? Semantics are important and I may have that terminology somewhat distorted. ?Wayne Maynard <wb6bfn@...>?
By Wayne · #1833 ·
Re: Don't rotate the SMA centre pin! But how do I avoid that?
"rotating locking collar"? Is that as opposed to a "rotating only" collar? Den tors 5 sep. 2019 07:50Wayne <wb6bfn@...> skrev:
By Hans J Albertsson · #1832 ·
Re: How to measure source impedance?
Is my "Unknown 1W source impedance calculation" theoretically correct? -Please ignore real measurement problems below- * My measurement gear still poor * Mismatch reflection happens front of -60dB
By RFy · #1831 ·
Re: Don't rotate the SMA centre pin! But how do I avoid that?
Some calibration standards do not have a rotating locking collar. In that case there is no way to avoid rotating the center pin unless you use those very short male-female SMA adapters sometimes
By Wayne · #1830 ·
Don't rotate the SMA centre pin! But how do I avoid that?
Try as I might, I cannot keep the pin+back assembly still while screwing the short and/or load calibration piece down in the SMA socket! Should I add some grip to their backs, with glue or solder?
By Hans J Albertsson · #1829 ·
Re: How to measure source impedance?
Why you guys talking about 'YOUR HT IS SHIT' or 'BURNT? THIS IS NOT IMPEDANCE ISSUE', 'ANTENNA WILL DAMAGE' or WORRYING ABOUT MY VNA?( I am not stupid, I know right way to connect LNA) Please stop to
By RFy · #1828 ·
Re: Building the firmware
I just did a fresh git pull and did a compile with GCC V8 update 3. It worked fine, no issues with SRAM space.
By [email protected] · #1827 ·
Re: TDR function vs code space
That is a very nice Idea, I would buy a second one for such work. There is also the path of going to a raspberry Pi that could drive a screen and just grab the raw data for the calculation In fact a
By Pierre Martel <petem001@...> · #1826 ·
Re: Early app for the NanoVNA
Hi Rune -- 0.0.5: Works nicely for me! Good stuff Rune!!! I like it better than any of the other apps I've seen for the nanoVNA. 73 -- Harry, W5PNY
By Harry McGavran Jr · #1825 ·
TDR function vs code space
I think many of us would really like having built-in TDR functionality for simple antenna & feedline testing.?? Considering how inexpensive the nanoVNA is I, for one, would not mind having one with
By Wayne · #1824 ·
Re: Early app for the NanoVNA
Actually, I should have said appeared in the window (app is a bit ambiguous). And I just wanted to add -- overall this is a very impressive app. I love it! - Jeff, k6jca
By Jeff Anderson · #1823 ·
Re: Early app for the NanoVNA
Hi Rune, I have downloaded your release 0.0.5 and am checking it out. Some comments: 1. At first I thought the Mouse Cursor was broken -- I was clicking in the S11 Smith Chart plot and I wasn't seeing
By Jeff Anderson · #1822 ·
Re: How to measure source impedance?
the hype seems entirely misleading to me. the typical basic rubber ducky is quite robust, i agree. however, higher gain multiband aftermarket antennas may well not be as robust. - 67 (base 11) -
By kb3cs · #1821 ·
Re: Early app for the NanoVNA
I too have tried to execute the .exe file from the .zip window, I am running Windows 10 64bit version and get a dialog box that I say to run anyway, but only get a brief "flash" window on my screen
By Bob Shaw · #1820 ·
Re: Early app for the NanoVNA
Found! Thanks again.
By dk1vi · #1819 ·