Results, and some conclusions. After swapping whips between antennas, West (the spider with 69mm below the ring) continues to out perform East (69mm spider legs from the center line of the whip), but ONLY SLIGHTLY, and depending on your reference test. I think the coverage map overlay tells the story pretty well (west is blue, east is green).
1) Spider leg length matters, but not significantly (based solely on these two instances)
2) The N based whip outperforms the SO-239 whip
3) AMPLIFIERS are IMPORTANT, and they can vary in performance even within a single make/model (and possibly change performance with time) (personal note: I now plan to put my amplifier for my permanent installation in an accessible location)
4) Perhaps most importantly, side by side testing is far superior than trying to tweak a single installation. With all the variances and dependencies, it is virtually impossible to discern performance differences when the tests are performed at different times.
I'm going to leave my test set up operational, but plan to move the winning spider to a permanent mount about on my roof soon. I want to try some more antennas/ideas. PLEASE comment on this, and let me know if there is something you think should be tested.
Thanks for bearing with me on this.
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