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Re: gnuplot for nanoVNA Touchstone files
nanoVNA shell commands `frequencies` and `data` naturally return columns of numbers, so nearly Touchstone format. The unix utility `paste` trivializes combining text file columns, and while it is not
By Oristo · #5172 ·
Re: Owen Duffy on improvised test fixtures #test-jig
Hi Jeff, I take a different approach to the test fixture, Mine in a copper sheet between a pair of PCB mount male connectors with alligator clips to the DUT. Since most of my work in <100 MHz, it
By Mel Farrer, K6KBE <farrermesa@...> · #5171 ·
Re: Owen Duffy on improvised test fixtures #test-jig
Bruce, I completely agree. Rune¡¯s code is available to all of us. If there¡¯s something I¡¯d like to see added (and there are two small mods), I look at it as an excellent reason to learn Python
By Jeff Anderson · #5170 ·
Re: NanoVNA-Saver 0.1.3
I agree, I look at changes I make as "WHAT IF" that way, I don't mess things up. However, when a good thing happens, I always recal.........Then save with new name. Mel, K6KBE wrote:
By Mel Farrer, K6KBE <farrermesa@...> · #5169 ·
Re: NanoVNA-Saver 0.1.3
Hi Nick , my suggestion is that the " save calibration " , save also the state of the instruments , like all the vna i know. If you , change some sweep parameter with the calibration applied , it's ok
By Maurizio IZ1MDJ · #5168 ·
Re: Abbreviated documentation for more simplistic tasks?
An excellent idea. Someone new to VNA's and what a complex impedance is will be overwhelmed if told to check the wiki, all the forum posts, and read some Agilent document. They just want to measure
By Jerry Gaffke · #5167 ·
Re: Possible Issue with ttrftech firmware (0.2.3-11) above 300 mhz
AA6KL, Thanks for the info and tips, I was successful in clearing the config and saving the cleared config to slot 0. Re-calibrated the device, and there was still no change with the smith chart above
By KE8CPD · #5166 ·
What is The Best calibrati¨®n for NanoVna???
Hello friends! very good day, what is the best way to make the best NanoVNA calibration since I have seen several videos of NanoVNA users that make them in different ways on YouTube and I don't know
By TITO-OA4LDR <oa4ldr@...> · #5165 ·
Re: NanoVNA-Saver 0.1.3
Hello Rune- Thanks for the fantastic software! I built an 11-pole 500 kHz Low Pass Chebyshev filter using AADE Filter Design software back in 2010 for use with a Softrock LF Ensemble II SDR kit. It
By Joe F. KC8RKL · #5164 ·
Re: Can't update firmware
As with re-calibration or after a firmware upgrade, you will first perform a Reset and then perform a calibration step by step (if you make a mistake, it will start over again). So here too, the
By Gyula Molnar · #5163 ·
Re: Owen Duffy on improvised test fixtures #test-jig
It's been my experience that those who can, do. Those who can't, criticize. I'm sure Rune would appreciate suggestions as to how to improve his software. But, at least he gave us a start. It's up to
By BruceN · #5161 ·
Re: NanoVNA-Saver 0.1.3
Hi Rune I would not expect measurements made outside of the frequency range of the current calibration to be "accurate". I would not want nvna-s to change the sweep setup when a calibration is loaded.
By Nick · #5160 ·
Re: errors of "error" models
#57 : ann : [LeastVNA] ~ [NanoVNA] later today 57#
By gin&pez@arg · #5159 ·
Re: errors of "error" models
Many people report work that¡¯s in progress, but report it in a way others can at least see what is the aims of the work. The title should give some indication of what the work is about, but even
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #5158 ·
Re: Supply noise at higher harmonics #internals
The IP5303 inverter section is running at 350KHz when running off of the internal battery. That will create a pile of noise. For a good sense of supply line noise, the IP5303 needs to be
By Larry Rothman · #5157 ·
Re: errors of "error" models
#56 : our [OPEN] ~ [SHORT] 'standards' in our [NanoVNA] and our [VNA] Hello, Allow us, please, to present our comparative results for the indications or readings taken with our [OPEN] and [SHORT]
By gin&pez@arg · #5156 ·
Re: errors of "error" models
#55 : just because this is research in progress : #55 @Dr. David Kirkby from Kirkby Microwave Ltd /g/nanovna-users/message/5150
By gin&pez@arg · #5155 ·
Re: NanoVNA-Saver 0.1.3
Hi Rune, OK, so this this may just be down to terminology after all. I guess what I'm looking for is something like the marker information presented in the AIM VNA software (see attached). Having both
By Martin · #5154 ·
Re: Purchase sources 4.3 inch NVA
From: ambaer52@... I understand that there is a 4.3 inch version available. Has anyone purchased one? If so, I am in the US. Where is a reliable source to purchase one? =========================
By David J Taylor · #5153 ·
Re: Supply noise at higher harmonics #internals
When @edy555 designed it and in Japan it was possible for others to build it in kit form, then in 2017 a description of the structure was made. At the end of this description is a list of known but
By Gyula Molnar · #5152 ·