"Jim - NN7K" wrote in message
. com...
'Corse, consider that there are certain constraints-- one being that
the antenna must be within a small distance from one end of the loop.
(for passive reflectors, at microwave, believe, they state 2-3 miles
(MAX)). and two, consider that at VHF, there is an effect called
"KNIFE EDGE REFRACTION" that tends to bend a signal over a hilltop
to a distant target on the other side of that ridge of hills!
But, for cell phones in a vehicle, those thru the glass antennas
on cars, with a whip on the outside , and what looks like a PAWN
BROKERS 3 ball symbol on the inside, do exactly what you describe
(or at least are susposed to)! as info, Jim NN7K

Hi Jim,
Yes, I've heard of knife-edge refraction, but the instance I was referring
to in the article had a real positive benefit. As I recall, the operator
went from zero contact to satifactory contact by hooking up 2 beams
back-to-back at the summit, with one beam pointing back at him - and the
other beam pointed to the otherwise unreachable distant repeater.
I wouldn't have thought something like that would work without some
signal amplification. But it does.