More images, a puzzle, and some explanation...like real estate, it may be location, location, location
To begin, it's true that I was open on CH1, but the image shows that both devices were displaying only CH0.
Perhaps I should have CH1 capped at 50 O? Not sure, but will test to see what difference...
Now puzzle: I arrived back and decided to do some checks. I was surprised to see change to LOGMAG signals on H. H_Q-0.4.3_20191114_173035c.jpg
I recal, and duplicated the test, being careful to lay out the 3.5m of RG316 with no overlaps. Surprised to see H_Q-0.4.3_20191114_174614c.jpg, because now the phase had a lot of jitter.
As I was moving the unit off the desk to take a better picture, the signals cleared up. Not sure why that is so...No running electronics on desk, but the desk is covered with a dark tempered glass...it may have metal in it.
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. But see AURSINC_cf_H_Q-0.4.3_20191114_174939.jpg.
I didn't recal the AURS. The phase is now cleaner, and closer to H, but there are those odd humps in LOGMAG.
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.
I am preparing to use this in the field, so I want to know what my expectations are. I also am trying to figure out if it is possible to put this at the mid-point of a 130 ft. 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. 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.
I also plan to test identical configurations using a laptop|USB and a mobile|tablet|USB to see how data gathering this way affects the displayed data.
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73 de Rich NE1EE
On the banks of the Piscataqua
Rich NE1EE
