Thread: Two db8e's
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Old 11-Jan-2016, 3:34 PM   #6
Retired A/V Tech
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,650
The easy part is putting two on the mast; the hard part is combining them.

When the signals from the same channel from each antenna arrive at the combining point, they will interfere with each other if they are not in phase.

The best way is to have a separate coax line from each and an A/B switch to select which antenna you want. Your TV will need to be able to add a channel after scan or you will need to rescan after each antenna change.

There are other ways of doing it, but you haven't given us enough information to consider other ways.
If you can not measure it, you can not improve it.
Lord Kelvin, 1883

Last edited by rabbit73; 11-Jan-2016 at 3:38 PM.
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