Didn't read it all, but tried anyhow. Had a half wave 11m jumper in the truck and had to know.
First thing I did was calibrate at the port saver. Then, I attached the tee and port extended the measurement plane to the tee. I initially did the calibration from 20MHz to 80MHz, but had to bump the stop up to 120MHz. I did not recalibrate, but that doesn't affect it enough to move that dip. Had I been measuring something more important, I would have. The wear on my ports wasn't justified by the minimal change in accuracy in this case.
I then connected a 50Ω terminator to one side of the tee to confirm my jumper length. At 27MHz, a half wave coax looks like an open leaving the terminator the only thing seen at the tee by the VNA. Where SWR is 1, the coax is a half wave or multiple. Coax is thus 1 wavelength at 54MHz.
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Then I removed the terminator and stuck just the center connector into the tee to make the loop antenna as described. I did get a nice match, 20MHz worth of BW under 2:1 SWR. Only thing is that it wasn't at 54MHz. It was up around 80MHz.
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This was sitting on my wood pile and maybe getting it up higher would have shifted the center frequency, didn't have time to test. I also did no measurements of the pattern, figured a better setup was necessary for that.
The important part is that the power goes somewhere and its definitely worth further investigation. Wish I had time today.
