Carl B said:So you have already been to antennaweb. Blue is a medium directional antenna w/ a pre-amp. If you are mounting it in an attic, you probably need to up that to a large directional w/ a pre-amp.
You didn't say what the frequency assignment is of the stations you want to receive. If they are all UHF, then a lot of antennas would fill the bill as large directional antennas. For example, CM 4228, Winegard PR-8800, Antennas Direct DB-8, CM 4248, Winegard PR-9032, and Antennas Direct XG91. For a pre-amp, most prefer a CM 7775 or 7777. If you are mounting outside, there are medium level versions of most of the foregoing listing of antennas from those vendors.
For one close channel in the opposite direction, you may be able to pick up the signal w/ your antenna pointed at the others. Try it first before buying a rotor (not a good choice if you have or plan to get a DVR) or a second antenna and JoinTenna.
Ok all UHF.......will mount outside......by medium level versions do you mean about half the size???................................Solid Signal suggested this:Terrestrial Digital DB4 Multi-Directional HDTV Antenna
(DB4).......Also not going to be using long cable run only 20' total