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On 4 Apr 2007 16:38:23 -0700, "art" wrote:
All very fascinating at least for non amateurs. We've been doing it for years on repeaters. It's called "down tilt" eBay has kits for sale as does: www.hotflashesatthetower.com (Andrew Antenna Down Tilt Mounting Kit 602030A. US $9.99) Proving anything can be patented, that was done 10 years ago: 5798675 Continuously variable phase-shifter for electrically down-tilting an antenna and on and on and on.... 73's Richard Clark, KB7QHC |