AVS Forum Special Member
Join Date: Jan 2000
Location: Salt Lake City, UT, USA
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You can combine two antennas with a (backwards) splitter, but any time you do that, it's going to be a crap-shoot as to how they interact.
Varying atmospheric conditions and multi-path will cause strange addition/subtraction effects across the individual channels, and may sometimes cause you to lose a channel.
As for "more signal", yes, you can stack antennas (identical, and pointed in the same direction) for more "gain"....which is really just a narrower beam-width.
When a big system uses multiple antennas, they process each channel individually. It's pretty complex and expensive. A "mid-range" priced system might use a Programmable Filter-Amplifier, which allows you to program different inputs (antennas) to different channels. They run around $1K for the unit.
Ken English, Sr. Engineer, KSL-TV.
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