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Re: NanoVNA App - Installation and Use
#applications
GMRS_two_way_radio
I thought I read somewhere it should be calibrated using the software if a person is going to be using the software for measurements
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Re: NanoVNA App - Installation and Use
#applications
Why are you trying to calibrate it using the computer?
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You can perform the calibration using the builtin calibration functions that use the three provided plugs (open, short & 50 ohm) 73 David On 8/23/2022 9:18 PM, GMRS_two_way_radio via groups.io wrote:
Hi |
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Re: At which point do we take the value of impedance to tune an antenna?
Francois,
Sorry for the delay but I've been too busy to pay much attention to this group. What I quoted was the IARU standard, which manufacturers follow to some extent. It would be better if they all followed it so that comparisons would mean something. But it's the closest you're going to get to something meaningful. Jerry, AI0K |
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Re: DiSlord v1.2.0 instability even though MS5351 clock-generator is selected (MS-3.6 HW version)
Post your issue on his github or group.
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On Wed, 24 Aug 2022 at 17:00, <cavokk@...> wrote:
Hi guys. |
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Re: NanoVNA App - Installation and Use
#applications
GMRS_two_way_radio
Thank-you and I also applied to be part of the beta group but still waiting.
I got my in May, so I wonder if I have the "old" display. I guess my other question is if I have the newer display module and I install firmware that is for the older display modual what will happen to my display? If it don't work right I don't care because I will be using the software I can re-flash it back if I need the display to work right. What is the best way to back up my firmware that I have on my nanoVNA? Thanks |
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Re: NanoVNA App - Installation and Use
#applications
i had both found in the nanovna beta test group
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dislord uploaded it there (to make it easy for you i add the fw file for the plus4) and the nano vna app?? you find here hope that helps you a bit dg9bfc sigi Am 24.08.2022 um 19:09 schrieb GMRS_two_way_radio via groups.io: Siegfried Jackstien - do you have a link to the firmware and that software?? The only version of software i see is 2.09 |
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Re: NanoVNA App - Installation and Use
#applications
GMRS_two_way_radio
Siegfried Jackstien - do you have a link to the firmware and that software?? The only version of software i see is 2.09
Thanks |
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Re: NanoVNA App - Installation and Use
#applications
i use fw 1.3.07 (23rd of august) on the plus4
and i use nanovna app 210 works fine here dg9bfc sigi |
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Re: Antenna Gain measurement with NanoVNA
This topic was discussed a few months ago and there is some good info there
/g/nanovna-users/topic/88059902#26349 Roger |
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Re: problems with OneOfEleven NanoVNA-App
what fw is on the plus4?? (i use 1.3.7 from dislord)
next is .. i see you are using version 209 of the nano vna app but there is a newer one so .. with new software and new fw here the plus4 just works fine i can calibrate on the device or in the nano vna app both do work fine dg9bfc sigi |
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Re: NanoVNA App - Installation and Use
#applications
GMRS_two_way_radio
Damn it, I was afraid you were going to say that. I don't like the other software :(
How can I tell if I have the newer hardware? And if I do, what happens when I load your firmware into it? Will the display just not work but the software will??? Thanks |
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Re: NanoVNA App - Installation and Use
#applications
V2Plus4 on original fw not supported by NanoVNA-App (as i remember, Owo not want fix several things in firmware for support)
Need fix several problems in exchange protocol on V2Plus4 side (or fix NanoVNA-App) My fw for V2Plus4 allow work vs NanoVNA-App, but not support last V2Plus4 hardware (different LCD module). I suggest use NanoVNA-QT, this software created for V2Plus4, and support by designer. |
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Re: NanoVNA App - Installation and Use
#applications
GMRS_two_way_radio
Hi
I tried to post a topic on the problem i am having but it hasnt been approved yet :( I am having problems (i can't calibrate) with OneOfEleven NanoVNA-App, I am using the nanoVNA V2 plus4 model maybe its not compatible with that model. here is what i have done so far: re-installed USB driver I tried 2 other computers, same problem ( Windows 8.1 and Windows 10) I tried another USB cable here are two videos so show what is going on: part 1 video: part 2 video: any help would be great! thanks |
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problems with OneOfEleven NanoVNA-App
GMRS_two_way_radio
Hi
I am having problems (i can't calibrate) with OneOfEleven NanoVNA-App, I am using the nanoVNA V2 plus4 model maybe its not compatible with that model. here is what i have done so far: re-installed USB driver I tried 2 other computers, same problem ( Windows 8.1 and Windows 10) I tried another USB cable here are two videos so show what is going on: part 1 video: part 2 video: any help would be great! thanks |
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Re: Antenna Gain measurement with NanoVNA
Michael Black
Are you measuring at the antenna?
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You can't measure SWR accurately at the rig unless your antenna is zero reactance at 50Ohms. Mike W9MDB On Tuesday, August 23, 2022 at 01:01:10 PM CDT, W0LEV <davearea51a@...> wrote:
A dipole, by definition, is resonant:? +jX = -jX = 0. A doublet is a dipole, but not resonant where you require. My 450-foot doublet exhibits its first 1/2-wavelength resonance at roughly 950 kHz, but does not show resonance in any of the HF ham bands. Yes, measurements need to be made to reduce / minimize unwanted reflections.? That's the devil in the details. Dave - W?LEV On Tue, Aug 23, 2022 at 5:54 PM Roger Need via groups.io <sailtamarack= [email protected]> wrote: On Tue, Aug 23, 2022 at 10:13 AM, W0LEV wrote:--over *Dave - W?LEV* *Just Let Darwin Work* -- Dave - W?LEV |
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DiSlord v1.2.0 instability even though MS5351 clock-generator is selected (MS-3.6 HW version)
Hi guys.
My original NanoVNA-H genuine (sourced from Eleshop in EU) has been working flawlessly with delivered 1.1.01 synchronised DiSlord firmware. After upgrading to DiSlord version 1.2.0 and selecting Ms5351 clock generator in options give severe signal error in around 420M-440Mhz and 600M something. Even reverting to Si5351 setting and back again as well as resetting all settings and creating completely new calibrations does not solve it. Only remedy is to revert back to 1.1.01 DiSlord synchronised version but then I miss all the new trace formats and especially the ability to flip screen. Anyone know if there will be a DiSlord synchronised 1.2.0 version with MS or SI selectable initial clock generator setting? Thanks C |
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Re: Antenna Gain measurement with NanoVNA
On 8/24/22 1:46 AM, F1AMM wrote:
M1 = Gunk * Gref1 Yes, the antennas are mounted in the same positions, relative to each other, for all measurements. The reference antennas can be dipoles. There's no need for all 3 antennas to have the same (approximate) gain. This was for a "nose to nose" gain measurement. If you need to do a radiation pattern, it gets trickier. Essentially you calibrate the "probe" antenna with a duplicate at known range. if you want to measure radiation patterns, then reflections and such becomes a bigger issue. |
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Re: Antenna Gain measurement with NanoVNA
F1AMM
M1 = Gunk * Gref1
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M2 = Gref1 * Gref2 M3 = Gunk * Gref2 This assumes that Gunk Gref1 and Gref2 are constant during the three measurements. I do not see at all how one can fulfill this condition already because of the directionality of the antennas. Or do you suppose that it is, for example, 3 yaggi that we reorient in the axis of each measure? -- F1AMM (Fran?ois) -----Message d'origine-----De la part de Jim Lux 24 ao?t 2022 03:24 |
Roger Need
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