by Richard Taylor on Thu Aug 14, 2008 3:45 pm
I have had success in mixing 2 outdoor antennas (either UHF or VHF/UHF combo antennas with a 2-way splitter used "backwards" as a signal combiner or mixer. Then you can run the combined signal thru a pre-amp if necessary, assuming you do not have a local strong transmitter near you, which you don't seem to need to worry about. If your transmitter sites are mostly in opposite directions from each other, this technique may alleviate the need to use an antenna rotor. The mixing technique will not work with analogue signals, because of multi-path and ghosting, but may work well for digital signals. Try to use antennas with good front-to-back ratios (good directionality) if possible.
You couild also run two separate coax leads to your TV and then switch them using an A/B switch, but this may cause confusion when the set scans for available channels. You can always manually add the other channels from the Menu functions. Be sure to check Antenna Web for any stations that will be switching their UHF digital channel to another channel after Feb.17. I call this the "double switch, " and it's not widely publicised yet. Any station whose original digital channel lies above channel 51 must change to a lower UHF or "high-band" VHF channel for digital broadcasts after Feb. 17. Channels above 51 will be auctioned byh the FCC. If a stations "legacy" channel was, say 17, and their original DTV assignment was, say, 55, they might move their DTV back to 17 after Feb. 17. Some original high-band (7-13) VHF channels might move their DTV transmitter back to their original legacy VHF after the 17th. Since VHF propogates better than UHF, they can use less power for the same coverage than if they were UHF.