Is there firmware for the NanoVNA-H that supports selecting the port impedance (as is available on the VNA-H$)?

Phase depends upon if the load seen is greater or less than the transmission line impedance. That will change the sign.

This ends my dream of a non-resonant rhombic... ...poof -- *Dave - WØLEV* -- Dave - WØLEV

I used an old kitchen chopping board to make a test fixture with the connectors I want to have at the measurement plane. If possible, I would like to store calibrations with the E-Delays included. Is

Return loss is loss going both ways. Don't divide by two.

Maybe. :) Years ago Warren B. Brune, W0TTK, was in quite a debate with another famous ham. I had saved the file from ARRL's QST archive, but that PC crashed with a Windows 10 installation and my ARRL

If you can, make a Norton's equivalent circuit. Basically a current source driving a short circuit. If any current can escape down the transmission line wouldn't that mean the source acts a a short ci

Well, IF the source has zero Ohms impedance and the line is lossless 50 Ohm and feeding a 50 Ohm load... are you saying the power in the wave will exist forever? Or, are you saying no power leaves the

I confess I have not been following all of this thread. However, please consider a transmitter with a source impedance of zero, then all the power is sent to the 50 Ohm load. Or, hook up a ThruLine ty

Just I wild guess: What scale are you using?

Andy, My suggestion is to Email Ward, AE6TY, and ask him how he did it. John, W0GN

Hi Andy, Ward, AE6TY, did this and offered to help with the software he used. You can google AE6TY and SimSmith to find his web pages. John, WoGN

Ray, Explore the Zep antenna used on the _Zeppelin_ [1] air ships. Or maybe the more moderern TACAMO setup for ELF. Joh, WoGN Links: ------ [1] https://www.google.com/search?sca_esv=fc7c61e83823ecc2&a

Thanks Stan.

Only want to measure the loss in a length of coax. If I use the saves open-short-load calibration, can I then just do a through calibration and save that?

Is it possible to add to a previous calibration? For example, say I have a set of S11 calibrations, but did not preform the S12 step and only have that saved. Is there a way to skip a new set of S11 c

Hi Barry, I see you are using a setup similar to what I use. I have an 80m dipole fed with 450 Ohm open wire line and a Johnson Match Box. The Match Box is inside a raised enclosure I built on the dec

One thing first, make SURE you reset the current calibration BEFORE you run calibration. When done, check your dipole, or better your dummy load, if you have one. John, W0GN

I don't know what you mean by "the calibration marker". After you do the calibration correctly, you shouldn't be able to move the smith marker around. IF you have the 50 Ohm load on, it will stay in t

OK. You need to select the trace that has the Smith chart. Go to TRACES. Click on the ones that are not the same color as the Smith chart. When only the Smith chart trace is selected, then try to move