I finally have closure.
Sixteen years ago [Sixteen years‽ Yikes!] I did some experiments with my car's keyless entry fob [1] and found that yes, increased the effective distance of said fob out to about 90′ (30m (meter) for those who are Imperially challenged). At the time, I had no clue as to why, but this video [2] (which was released yesterday) has a decent explanation for the phenomenon [3].
[2] https://www.youtube.com/watch?v=ZrIf0PArZu4