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Originally Posted by WazzuGrad
I'll try disconnecting the pre-amp. I do have the compass at around 300d.
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Did taking out the amp have any effect?
If you have your CS2 pointed at Seattle, you shouldn't be having that much trouble receiving channels like KING, KOMO, KIRO, and KONG. They are all UHF stations that are well within reach of the CS2's sensitivity.
This seems to imply that something else is wrong. If it's not due to amp overload, then I would suspect that multipath may be the problem. The CS2 has a pretty wide beam pattern, and if there are significant sources of multipath around (reflections off tall buildings, mountains, etc.), then the CS2 is going to deliver a lot of that to your receiver (making the signals hard to decode).
Have you ever watched analog channels with this antenna? If so, were there any visible ghosts?
A more directional antenna can cut down the amount of multipath being delivered to your tuner. What you want is an antenna with a narrower (side-to-side) beam width.
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I'm less concerned about channels 9, 11, and 13. Our setup allows us to get KMYQ 25, which on their .2 channel is a feed of 13 in standard def (OK if it's all we can get).
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If you're going to change antennas, then you might as well get a combo antenna capable of high VHF like the Winegard HD7696P or Antennacraft HBU-44.
If you really want to limit yourself to UHF-only stations, then a Antennas Direct DB8 or 91XG will give you a narrower beam width to reduce multipath.