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Re: Now What
Herb, thanks very much. I assume the two devices are different enough that the manual for the smaller one will not be of help. I almost purchased the smaller one but thought why not get the larger
By Andrew Baer, M.D. <ambaer52@...> · #6506 ·
Re: T-Check for my nanoVNA - Results look excellent below 150 MHz and acceptable up to 300 MHz
Attached spreadsheet contains the formula and you can paste your s2p file on the input tab -- Erik, PD0EK
By Erik Kaashoek · #6505 ·
NanoVNA software developers wanted #hacking
This is sort of "bump" / dupe. Or more direct approach. Take your pick. This is NOT post for / to users of NanoVNA, This post is about NanoVNA operating / embedded software hacking. I am planning to
By vaclav_sal <vaclav_sal@...> · #6504 ·
Re: NanoVNA-Saver 0.1.5
A quick note, for those running from the Python source: "scipy" is required for the TDR impedance measurement display, and you therefore need to install this, for example by re-running the "pip
By Rune Broberg · #6503 ·
Re: T-Check for my nanoVNA - Results look excellent below 150 MHz and acceptable up to 300 MHz
Hello Bryan, I am trying to calculate the T-Check value from the NanoVNA-Saver .S2P file with LibreOffice Calc, but I did not got the T-Check formular adopted. This is already done in the attached
By Rudi · #6502 ·
Re: Chasing ghosts??? #internals #calibration
Its in Octave (Matlab equivalent) for now till I know what algorithms to use I have a S11 model for the cable (includes estimating the frequency dependent loss and the Complex static impedance (did
By Erik Kaashoek · #6501 ·
Re: Chasing ghosts??? #internals #calibration
Hi Erik - Do you plan a GitHub repository? What approach for solving model parameters?
By Oristo · #6500 ·
Re: VNWA software #calibration
Hi Oristo Here is the Screen control for the FA-VA5 I have received from AE5CZ Larry Goga and have permission to distribute as I like Kind regards Kurt -----Oprindelig meddelelse----- Fra:
By Kurt Poulsen · #6499 ·
Re: VNWA software #calibration
Hi Oristo The Yahoo VNWA group is in the process to move to a io group which is a better platform for a Wiki which I am sure will come. I have large number of document I will "flood" the Wiki with in
By Kurt Poulsen · #6498 ·
Re: Chasing ghosts??? #internals #calibration
And here is the nanoVNA data with the impedance correction for the long cable ( -0.075 -0.56i ohm) Substantial oscillations are still there and these do NOT come from the calibration kit or the cable
By Erik Kaashoek · #6497 ·
Re: VNWA software #calibration
Sadly, I lack the playful approach. Yes, I researched FA-VA5 before nanoVNA, but avoided the software until your prompting because of allergy to controls hidden in graphic user interfaces. That is why
By Oristo · #6496 ·
Re: errors of "error" models
On Tue, Nov 5, 2019 at 05:48 AM, gin&pez@arg wrote: Dear gin&pez@arg How are you sure the errors to be corrected are larger than the uncertainty in your measurement. e.g. you are not trying to correct
By Erik Kaashoek · #6495 ·
Re: Chasing ghosts??? #internals #calibration
And here is a hint a first order cable correction (assuming the cable impedance is not exactly Z0) can improve the results The model corrects for the long cable impedance mismatch for the 3GHz VNA
By Erik Kaashoek · #6494 ·
Re: errors of "error" models
#72 : facupov : confirmation and suggestion @QRP RX - 5 November 2019 : /g/nanovna-users/message/6471 @Bob Albert - 5 November 2019 : /g/nanovna-users/message/6472 @
By gin&pez@arg · #6493 ·
Re: VNWA software #calibration
Hi Oristo Good to hear about success. It may be a crazy user interface for you being a custom to something else, but not really for me as been the only VNA for me since it's birth. It is for more than
By Kurt Poulsen · #6492 ·
Re: NanoVNA-Saver 0.1.5
Hi Rune, The new TDR impedance measurement is good too. However it really could use the ability to manually scale the impedance in addition to the length, as the low impedance end of the scale is too
By Martin · #6491 ·
Re: NanoVNA-Saver 0.1.5
Hi Martin, thanks for the bug report. I'll have a look at it (and probably a fix!) for the next version :-) -- Rune / 5Q5R [email protected]> wrote:
By Rune Broberg · #6490 ·
Re: [nanovna-f] NanoVNA-Saver 0.1.5
From: Rune Broberg I just released NanoVNA-Saver 0.1.5: https://github.com/mihtjel/nanovna-saver/releases/tag/v0.1.5 [] As ever, dear mailing list users, I very much look forward to your comments,
By David J Taylor · #6489 ·
Re: NanoVNA-Saver 0.1.5
Hi Rune, Thanks for the latest update, especially the ability to change the marker size and the relabeling of the Series L & C values One small bug I've noticed is that the Marker number on the S11
By Martin · #6488 ·
Re: VNWA software #calibration
Hi Kurt - Thanks for the additional hints, so essential success! ... which for the attached VNWA main window are 'Log Mag' or 'Smith' .. which is titled 'Display Settings', also attached ... shown
By Oristo · #6487 ·