NanoVNA-H4, Version 4.2
I see my V4.2 NanoVNA has what appears to be an internal SD memory card socket, but I can't find any documentation about it. Can it do that same features as the newer V4.4 Nano's (with upgraded
By
John N0TA <reillyjf@...>
·
#29893
·
|
Re: Measuring Air Capacitor losses
#general_vna
I don't measure ultra-high Q inductors very often, but my favoured method is to use three ATC 800B porcelain caps in parallel to make up the resonating capacitance. Air spaced caps are generally
By
jmr
·
#29892
·
|
Re: Anything for Windows 7?
Your NanoVNA-App-Setup-v1.1.209-OD12(1).exe and drivers is the only software which works with my Nano VNA V2 Plus4 and Windows 7/32. I have 3 different Nano VNAs, at least 3 kinds of SW for Nano VNA
By
Leif M
·
#29890
·
|
Re: NanoVNA-saver crashes on calibration
This is a known bug of 1.2.0, see my issue report #34: https://github.com/DiSlord/NanoVNA-D/issues/34 It was already fixed by DiSlord in June. I strongly recommend to follow his fast development on
By
Ho-Ro
·
#29889
·
|
Re: NanoVNA-saver crashes on calibration
Thank you Roger and Stan. That's very helpful. Mike
By
Mike
·
#29888
·
|
Re: Does calibration "drift?" How often do you need to re-do?
#calibration
I calibrate for each frequency segment I am checking. I use mine mostly as an antenna analyzer. I calibrate at the beginning of each session to insure the best accuracy. Calibration is so quick and
By
Colin McDonald
·
#29887
·
|
Re: NanoVNA-saver crashes on calibration
I have the same issue. If you leave the nano set to 101 pts, and use Saver to increase the points to 401 or whatever, then it works fine. For some reason the code gets in a mode where it is not
By
Stan Dye
·
#29886
·
|
Re: Antenna tuning in field, calibration with SMA cal set followed by BNC and UHF adaptors
Excellent use of the NANO's. I have gone to including one of the NANOVNA's in our standard (electronic) camping equipment. They are invaluable in any portable setup. Dave - W?LEV
By
W0LEV
·
#29885
·
|
Re: NanoVNA-saver crashes on calibration
Mike, Version 5 of NanoVNA Saver has a lot of code changes and is buggy. I suggest you try version 4. Also consider using NanoVNA app instead. Much better graphics scaling and sweep comparison
By
Roger Need
·
#29884
·
|
Re: Does calibration "drift?" How often do you need to re-do?
#calibration
Just from a physics-based opinion, things that require calibration do tend to drift over time. Component aging, thermal/environmental cycling, physical impact (dropping on the ground), and overvoltage
By
lobos305@...
·
#29883
·
|
Re: Does calibration "drift?" How often do you need to re-do?
#calibration
Except to tell a stupidity, I prefer, to make the calibration on all the range of frequency which I will use, with many points (therefore many segments). Like: 20 segments for 1-30 MHz with smoothing
By
F1AMM <18471@...>
·
#29882
·
|
Re: Does calibration "drift?" How often do you need to re-do?
#calibration
I've been using the same calibrations over the HF range for over a year, and when I check the SOLT loads, they're still on the money. I've done one 401 point calibration from 3.5 to 30 MHz and can use
By
Lou W7HV
·
#29881
·
|
NanoVNA-saver crashes on calibration
New user here so apologies if this has been covered already but I couldn't see it. I have installed NanoVNA-Saver v0.5.3 on a Windows 10 laptop and I'm using it with a NanoVNA H4 with DisLord firmware
By
Mike
·
#29880
·
|
Does calibration "drift?" How often do you need to re-do?
#calibration
(Hi, I didn't see this covered in the wiki or other topics. Apologies if it has been) I'd like to save three calibrations (corresponding to 3 different frequency ranges) for repeated recall. How often
By
Connie
·
#29879
·
|
Re: Antenna tuning in field, calibration with SMA cal set followed by BNC and UHF adaptors
This is an enormously useful insight for my use case. With this information, along with some of the other tips here, I spent several hours this afternoon with my NanoVNA and my portable adjustable
By
Connie
·
#29878
·
|
Re: Off topic nanoVNA: EZNEC
my experience likewise. It sort of depends on what "ground" is and how close you are. NEC4 does much better with antennas that are close to or touch the soil. But NEC2 does pretty good, if you're
By
Jim Lux
·
#29877
·
|
Re: Off topic nanoVNA: EZNEC
Back in 2011, I used something called FEKO Lite to model a PCB bowtie antenna with a tapered matching feedline that had to function both as an antenna and a rudder for an autonomous submarine.
By
Douglas Butler
·
#29876
·
|
Re: Off topic nanoVNA: EZNEC
OPENEMS.DE Open EMS is to HFSS as Linux? is to? Windows Produced by a community of EE and software geeks. Be sure to download the tutorials. Like HFSS, it has quite the vertical learning curve.?
By
KENT BRITAIN
·
#29875
·
|
Re: Off topic nanoVNA: EZNEC
Sonnet USA supplies a far-field radiation pattern program as an option on all versions except the free SonnetLite. It probably costs an arm and a leg to get it, though. I've been using SonnetLite for
By
Zack Widup
·
#29874
·
|
Re: Off topic nanoVNA: EZNEC
Thank hou for correcting me. DaveD
By
Dave Daniel
·
#29873
·
|