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Re: errors of "error" models
Hello Oristo; It is good to know this topic is being followed. I hope there are others more capable and perhaps more patient than I, and I welcome them to please chime in. It may expedite the pace of
By Gary O'Neil · #4409 ·
Re: NanoVNA-Saver 0.1.1
Rune, I spent the day verifying unknown filters in my ham shack and documenting their performance using your new "Analysis" module (Tks !). I attached files earlier for typical high pass and low pass
By hwalker · #4408 ·
Measuring Q
is there any info on measuring the Q of a network and antenna? I set up an S21 test using the matched network and antenna on CH0 and a short coil on CH1, looking at the LOGMAG trace for CH1 I measured
By sean@... · #4407 ·
Locked Re: Inflation of this forum
I don¡¯t think splitting into two will be sufficient. From what I understood from the group owner around a week ago, the number of subscribers was showing no signs of tailing off. I think we need to
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #4406 ·
Calibration Procedure
I downloaded v1.1 of the Calibration Procedure and all is well until I get to Note 21. When I connect the two ports together, my Blue Line is at the very top of the chart and the readout fluctuates
By Dick · #4405 ·
Locked Re: Inflation of this forum
Here¡¯s a suggestion to mull over¡­ Suppose a second nanoVNA group be initiated called ¡°NanoVNA for Beginners¡±, or ¡°New to NanoVNA¡± The benefits are subtle but would potentially decimate the
By Gary O'Neil · #4404 ·
Re: Power output from CH0 of the nanoVNA as a function of frequency
Kurt, You are correct. That is the very reason I used a wide-band device. I wanted to know the total power coming out of the port. I was not trying to determine the amount of signal that is being used
By Bryan, WA5VAH · #4403 ·
Re: NanoVNA-Saver 0.1.1
Rune, Here you go: ch> version 0.1.1.1-5-gd609fb2 ch> info Kernel: 4.0.0 Compiler: GCC 8.2.1 20181213 (release) [gcc-8-branch revision 267074] Architecture: ARMv6-M Core Variant: Cortex-M0 Port Info:
By Bryan, WA5VAH · #4402 ·
Re: Very poor thru (barrel) supplied with NanoVNAs
Hello David, I had heard rumours of there being bad Female-Female adaptors included with some NanoVNAs. I have a bunch of cheap chinese adaptors of that kind, the one that came with the NanoVNA, and
By Rune Broberg · #4401 ·
Re: Very poor thru (barrel) supplied with NanoVNAs
drkirkby@...> wrote: I forgot to say, the trace that¡¯s barely visible is the thru on the left of the photograph. It¡¯s return loss is very close to 0 dB even at 7 GHz. Dave -- Dr.
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #4400 ·
Very poor thru (barrel) supplied with NanoVNAs
I¡¯ve have two NanoVNAs, and both were supplied with a female-female SMA adapter like on the right. It quite a bit longer than most SMA female-female adapters. The one on the left is much shorter.
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #4399 ·
Re: Annotated nanoVNA menu diagram
Hi David - You have reached a wrong number; I wrote only https://oristopo.github.io/nVhelp/html/Menu.htm You could request a firmware change on GitHub, e.g.: https://github.com/ttrftech/NanoVNA/issues
By Oristo · #4398 ·
Re: Annotated nanoVNA menu diagram
If you are changing menus, could you make the VNA back button loop around if using the switch. For example, if you are in a menu item labeled back, if you press left switch, it goes up one item, and
By David Huff · #4397 ·
Re: I am a newbie
Do a search in this group for "Place To Buy".
By Paul Brodie · #4396 ·
I am a newbie
I caught a YouTube video on these and I am very interesting in getting one for my shack however I know next to nothing about them. I have several antenna analyzers for my ham radio equipment and these
By trrs73 · #4395 ·
Re: NanoVNA V2
$15 Particle Xenon has bluetooth https://www.amazon.com/dp/B07N964T22
By Oristo · #4394 ·
Re: NanoVNA-Saver 0.1.1
Hi Bryan, I'm not entirely sure *why* it happens - but I believe edy555 has fixed the issues in his latest firmware versions. I don't know about Hugen's firmware versions. The next version of
By Rune Broberg · #4393 ·
Re: Power output from CH0 of the nanoVNA as a function of frequency
Hi Bryburn Using a wideband power meter (you did not specify what device you used) will not be able to filter out the harmonics signal amplitude. For that purpose you need a selective power meter or a
By Kurt Poulsen · #4392 ·
Re: NanoVNA-Saver 0.1.1
Rune, With all of the recent versions of nanoVNASaver (0.0.11, 0.0.12, 0.1.0, 0.1.1) I have been occasionally getting a pure white screen on the nanoVNA while making measurements using nanoVNASaver. I
By Bryan, WA5VAH · #4391 ·
Re: info update
Does anyone know a way to cleaner the 5 calibration memories? The DMR-CLEAR_MEMORY_DFU.dfu file does not seem to do this (only firmware cleaner?). Thanks
By @in3elx · #4390 ·