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Re: NanoVNA-App in app calibration problem (bug?) #calibration #nanovna-app
Getting down in the weeds here, but it's not so much the compiler as the parsing library it uses (which might be different at run time and compile time). You d
By Jim Lux · #31719 ·
Re: NanoVNA-App in app calibration problem (bug?) #calibration #nanovna-app
For SnP (Touchstone, S1P, S2P, etc.) files it's easy, because the values are space delimited. What's *not* easy is that most of the libraries won't do it for you. You have to parse the data fields,
By Jim Lux · #31718 ·
Re: NanoVNA-App in app calibration problem (bug?) #calibration #nanovna-app
Some software is localized, and when you put out a number, by default it uses comma as the "decimal point". In particular the various MS Visual whatevers can do this for dialogs. What's sort of
By Jim Lux · #31717 ·
Re: NanoVNA-App in app calibration problem (bug?) #calibration #nanovna-app
Did you change the frequencies in the cal file, or the actual calibration data, keeping the frequencies the same? In general, yes, there's likely some interpolation function.
By Jim Lux · #31716 ·
Re: New user - which Version to use?
I would recommend keeping the firmware version that it comes with until you have used it for awhile and become very familiar with its operation. Newer versions of firmware have added many useful
By Stan Dye · #31715 ·
Re: S-Band NanoVNA - SMA Connector Care
Well, they're typically rated at 500 mate/demate cycles, which is a lot, compared to some of those tiny "snap on" connector which are more like 5-10 cycles. And that spec is more like a "what it's
By Jim Lux · #31714 ·
New user - which Version to use?
Hi, I am awaiting delivery of my first nanovna H4. It is going to be used to examine various types of mobile VHF aerial sytems swr performance. I have never used one and I do NOT know which version or
By John Knight · #31713 ·
Re: bALUN Common mode reject Z measurement
Try this link for discussions on this subject... /g/nanovna-users/topic/97089104?p=Created%2C%2C%2C20%2C1%2C0%2C0 Roger
By Roger Need · #31712 ·
Re: New user to H4 model
Terry, yes, this list has lots of traffic. To Unsubscribe, use the Unsubscribe link at the very bottom of any one of the emails you get from the group. There is also a link to Mute a topic, i.e. the
By Stan Dye · #31711 ·
Re: New user to H4 model
Unsubscribe
By Terry Perdue <K8tp@...> · #31710 ·
Re: NanoVNA L/C Match
Many Thanks! That helps me a great deal. -- Mike, W0IH
By Michael Foerster · #31709 ·
Re: NanoVNA-App in app calibration problem (bug?) #calibration #nanovna-app
Well that was quick! Owen Duffy has released a new version of the NanoVNA App using linear interpolation and it gives almost identical results to my stand-alone NanoVNA-H4. Thanks Owen for doing the
By Roger Need · #31708 ·
compensating for internal Z's of NanoVNA
Dear DiSlord, As the impedances of the NanoVNA are not precisely 50ohm (they can even be something like 43ohm), I was wondering if this could be compensated for within your software? I think that
By Victor Reijs · #31707 ·
Re: New user to H4 model
All I did was plug the NanoVNA-H4 (in DFU mode) into the USB port of a Windows 11 computer that had not been configured for this device before. I did not do anything else. Windows brought up the new
By Roger Need · #31706 ·
Re: New user to H4 model
Roger, From where did windows get the update? I tried to pick the driver and when it couldn¡¯t I let windows go out and choose but it came back after what seemed like an hour and responded no
By Steve Bowers <bowxyz@...> · #31705 ·
Re: New user to H4 model
Steve, I just ran some tests on a newly installedWindows 11 and it automatically loaded the COM port and DFU drivers within about a minute. I had to have an Internet connection active in order to do
By Roger Need · #31704 ·
Re: NanoVNA L/C Match
On Tue, Mar 7, 2023 at 03:17 PM, Michael Foerster wrote: > I have a NanoVNA-SAA2 and I've found that there is a "Measure" parameter that > I can set to "L/C Match". > > So, for my 80m dipole, it
By Roger Need · #31703 ·
bALUN Common mode reject Z measurement
Hello, Is there a way to measure the impedance of a balun (current type, connecting mesh to mesh), but not as rejection in dB, but directly as impedance values using the 2 ports? As a guide, I have
By Ezequiel Reinaldi · #31702 ·
NanoVNA L/C Match
I have a NanoVNA-SAA2 and I've found that there is a "Measure" parameter that I can set to "L/C Match". (The forum won't allow me to attach the picture.) So, for my 80m dipole, it shows: L/C match for
By Michael Foerster · #31701 ·
Re: New user to H4 model
NanoVNA-APP (on PC) can also update firmware, without DFuse. And apparently without special driver. (It's been a while since I used it, my memory details are fuzzy now.) I also had plenty of troubles
By DougVL · #31700 ·