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Re: Any ideas for test jigs?
Unfortunate, it is a little more involved. However, some assumptions might be used and you can see how close you come. Given that the VNA with no added effort returns only S21 and S11. The input power
By alan victor · #5071 ·
Re: NanoVNA WebApp USB question
Finally, an excuse to get one of these....
By Paul Brodie · #5070 ·
Re: NanoVNA WebApp USB question
C'mon Wes, you're a Ham! Scavenge the parts from an old cellphone or dead radio.? I use a hot air gun to loosen the parts.? 73... Larry On Wed, 16 Oct 2019 at 5:01 PM, N9KDY<n9kdy@...>
By Larry Rothman · #5069 ·
Re: NanoVNA V2 - I vote for a larger instrument...
What I want is a slightly larger display, a 3.2" or a 3.5" is not that much more expensive... But I also know: the most dangerous thing in the world beside a programmer with an soldering iron is a
By necessaryevil86@... · #5068 ·
Re: NanoVNA-Saver 0.1.3
I'm observing that the Text window (left side of the display) resizes horizontally when marker data updates. This causes the displayed charts to resize as needed to fit the screen, and it creates a
By Gary O'Neil · #5067 ·
Re: NanoVNA WebApp USB question
Jacon Zar wrote: I was kind of hoping for something like "0603" or "0402" - standard name for the sizes of passive components. I'll just open it up and have a look, thanks anyway. -- Wes Will N9KDY
By N9KDY · #5066 ·
Re: Can't update firmware
Thanks, Oristo. That fixed it. The key thing that finally made it work was when I Uninstalled the old driver before starting up Driver Wizard. Otherwise it just kept telling me I already had the best
By xltrader100@... · #5065 ·
Re: Any ideas for test jigs?
Signal levels may be a problem. Where it is best to put an attenuator.
By Leif M · #5064 ·
Re: errors of "error" models
#51: the full final report 1 with contiguous full online images is here: https://acomelectronics.com/forum/viewtopic.php?p=1311#p1311 51#
By gin&pez@arg · #5063 ·
Re: Any ideas for test jigs?
Indeed ...Just thought I'd inject (from nanoVNA) CH0 into base (via bias-t and attenuator) monitorCH1 out on collector (via bias-t) and look at screen ...close enough for me Jim
By jim <ab7vf@...> · #5062 ·
Re: errors of "error" models
#50 : The Full Final Report 1 : - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Nominal Values Zinp = ( Rinp , Xinp ) of our Standard [ref2007box], in terms of frequency, using [NanoVNA] and
By gin&pez@arg · #5061 ·
Re: NanoVNA WebApp USB question
Well, Wes, to be honest, I don't have plans to put those resistors into mine Nano, because I don't posses any host with USB-C socket yet ;-) But I just opened case and must say it would be a paramount
By Jacon Zar · #5060 ·
Re: NanoVNA WebApp USB question
Wes, Thanks for the correction. I don;t knwo the location of the pulldown resistors but do don't plan on using a USB-C to USB-C cable. Mike N2MS
By Mike N2MS · #5059 ·
Re: NanoVNA WebApp USB question
Haven't opened the case yet. Please, which form factor SM 5.1k resistors? Wish I had known this before I put that order in for SMA connectors at Digi-Key.... I hate paying ten bucks shipping for fifty
By N9KDY · #5058 ·
Re: NanoVNA WebApp USB question
Just small correction - pulldown 5k1 resistors on NanoVNA socket.
By Jacon Zar · #5057 ·
Re: NanoVNA-Saver 0.1.3
Hi Rune, This note may explain what I mean. http://www.phys.ufl.edu/~majewski/nqr/paper/nqr_detection_educational/series-parallel-impedance-parameters-an.pdf I've got some other info that may be of
By Martin · #5056 ·
Re: NanoVNA-Saver 0.1.3
Hello Rune, Sorry for the confusion. I found the way to remove the Smith chart display, operator error, hi. Yes, the R & X he asked for is what I use, and the confusion is that the display of that
By Mel Farrer, K6KBE <farrermesa@...> · #5055 ·
Re: NanoVNA-Saver 0.1.3
Right - it doesn't get set immediately when you connect. That's apparently still a bug. But if you enter anything in the frequency input fields, it should still update. :-) -- Rune / 5Q5R
By Rune Broberg · #5054 ·
Re: NanoVNA-Saver 0.1.3
Hi all, I am confused about the remarks as well Rune. The current saver routine displays the Chart, the VSWR plot etc... with the MARKER DATA display providing the R+/- jX values. As well it provides
By alan victor · #5053 ·
Re: NanoVNA-Saver 0.1.3
Forgot the attachment. In both 0.1.3 and 0.1.2 the "Hz/step" field is blank. Prior to 0.1.2 the calculated value was shown in the field. Herb
By hwalker · #5052 ·