The alternative is to cal to the end of the ladder line, but I don't know how that will work.to new to VNA. plus dipole fed by plastic window 'ladder line' to measure feed point impedance vs frequency and how it varies as we pull up the antenna from ground level to full height. I also am trying to figure out if it is possible to put this at the mid-point of a 130 ft.

I am preparing to use this in the field, so I want to know what my expectations are.

I note there is a 180 degree phase difference twixt AURS and H in both my original post and this one, and don't know if that is important. The phase is now cleaner, and closer to H, but there are those odd humps in LOGMAG. Seeing the effect of raising the H VNA from the desk, I wondered what the AURSINC unit would look like.in my original post, it was very much worse. Not sure why that is so.No running electronics on desk, but the desk is covered with a dark tempered may have metal in it. Surprised to see H_Q-0.4.3_20191114_174614c.jpg, because now the phase had a lot of jitter.Īs I was moving the unit off the desk to take a better picture, the signals cleared up. I recal, and duplicated the test, being careful to lay out the 3.5m of RG316 with no overlaps.

I was surprised to see change to LOGMAG signals on H. Now puzzle: I arrived back and decided to do some checks. Perhaps I should have CH1 capped at 50 O? Not sure, but will test to see what difference. To begin, it's true that I was open on CH1, but the image shows that both devices were displaying only CH0. More images, a puzzle, and some explanation.like real estate, it may be location, location, location

Aursinc nanovna