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Re: Antenna Gain measurement with NanoVNA
he does not want it ... but it is ;-) fed with a balanced tuner it should work any band from 160 to 10 maybe the ladderline length needs some tuning if you are at a very high or low impedance spot on
By Siegfried Jackstien · #29396 ·
Re: Bug or fubar'd upgrade? #firmware
Cliff, You can covert a dfu file to bin using the DFU File Manager that comes with DfuSe demo but unfortunately that only installs on Windows. I did the conversion for you of DiSlords version 1.2 dfu
By Roger Need · #29395 ·
Re: Antenna Gain measurement with NanoVNA
Good afternoon Dave. Just out of curiosity, why would you want a 450 ft doublet resonant at 950 kHz? Fred - N4CLA
By Fred Moore · #29394 ·
Re: Antenna Gain measurement with NanoVNA
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
By W0LEV · #29393 ·
Re: Antenna Gain measurement with NanoVNA
That is the gain of a dipole antenna in free space at resonance. Over ground the gain is higher. How much higher depends on height and ground characteristics. Roger
By Roger Need · #29392 ·
Re: Antenna Gain measurement with NanoVNA
A dipole works fine for the reference antenna. Nominally 2.2_ dB gain over isotropic. Dave - W?LEV -- Dave - W?LEV
By W0LEV · #29391 ·
Re: Bug or fubar'd upgrade? #firmware
No desire - Cube is a far better tool, and supported by ST. I see no real advantage to .dfu over .bin, and ST has obsoleted it as well.
By Tim Dawson · #29390 ·
Re: Antenna Gain measurement with NanoVNA
Yes, but you need a source antenna and an antenna for the same frequency with known gain.? ?Kent WA5VJB
By KENT BRITAIN · #29389 ·
Antenna Gain measurement with NanoVNA
Hello, Is it possible to measure PCB trace antenna Gain with the NanoVNA? Thanks
By Diane BONKOUNGOU <dianebonk2@...> · #29388 ·
SAA-2N Crashes NanoVNASaver when attempting to Connect
Hi All, I recently purched a SAA-2N from Amazon, and could only Intemittantly connect to NanoVNASaver software. Most of the attempts to Connect the SAA-2 to NanoSaver caused it to crash. From what I
By Frank Dziurda · #29387 ·
Re: Bug or fubar'd upgrade? #firmware
Default is -H, for -H4 the command is TARGET=F303 make && make flash
By Ho-Ro · #29386 ·
Re: Bug or fubar'd upgrade? #firmware
For FW upgrade on a Linux system you can use "dfu-util" that is available e.g. for Debian: $ apt show dfu-util Package: dfu-util Version: 0.9-1+b1 Priority: optional Section: electronics Source:
By Ho-Ro · #29385 ·
Re: Bug or fubar'd upgrade? #firmware
Does that program (STDFU File Manager) have a Linux build? It's about the only component missing on tbe Linux side for coders that only output .dfu (and why Cube can't extract ftom dfu is a mystery,
By Tim Dawson · #29384 ·
Re: Bug or fubar'd upgrade? #firmware
I was able to use STDFU File Manager to extract the .bin file from the 1.2.0 .dfu and then load it with STM32CubeProgrammer, which seems to have worked fine. I've been playing around with it a bit,
By Jeff Peacock · #29383 ·
Re: Bug or fubar'd upgrade? #firmware
Note that Cube is the *ONLY* programmer tool that STMicro officially supports . . . (and which should support all platforms). It should be without flaw, the developers just need to drop plain .bin
By Tim Dawson · #29382 ·
Re: Bug or fubar'd upgrade? #firmware
Thank you for your suggestion Roger, but I don't think you understand what I am looking for. I'm looking for the .bin version of the firmware 1.2 update file. I'm on Mac and use the STM Cube
By Cliff <ae5zaham@...> · #29381 ·
Re: Bug or fubar'd upgrade? #firmware
Cliff, I suggest you use NanoVNA app as your PC program. It is easy to use for firmware updates and has never failed me yet. It also does all the things that NanoSaver does and in my opinion is
By Roger Need · #29380 ·
Re: Bug or fubar'd upgrade? #firmware
Where would I find the corresponding .bin file for the H4? 73, Cliff, AE5ZA
By Cliff <ae5zaham@...> · #29379 ·
Re: SV4401A review
my final review...Battery experiments were futile. All batteries will show the power on problem when fully charged. My workaround if I need it in the field is to carry a phone charger with type C
By Ken Bozarth · #29378 ·
Re: Bug or fubar'd upgrade? #firmware
You can download it from here https://github.com/DiSlord/NanoVNA-D/releases
By DiSlord · #29377 ·