[patrick_here]

Well the reason for the pre-amp is that I have a long distance from the antenna to my TV. It's 70' total ...it goes first to a cable TV box and from there (through an intermediate connector) to my TV (it needs to go this way).

The reason I used the pre-amp was because I wanted to be able to point the antenna North-Northwest (to pickup many channels from several Transmit Antennas in that direction) and also pickup a few very good channels from a transmit antenna located almost directly east. In other words this antenna already had partial reception from a tower located 110degrees away from where it is pointing so I installed an amplifier to get better reception on those few channels located east of the antenna.

As mentioned in the original post ...rabbit ears (with a pre-amp) get quite good reception on several channels but when the signal from the antenna has to travel through the 70' of cable the reception is terrible. My house is not high enough to get a clear path to Transmt towers even with a roof-mounted antenna. There is a higher house nearby and a tree or two here or there. Nevertheless I do get great reception on most channels with a pre-amp through the 70' cable.

But I didn't know about the re-scanning option so I think I'll try the double rescan as a first step. Thanks for that advice teleview.

(UPDATE 7/26: I had previously stated in this post that "Without the pre-amp I do not get reception worth bothering with" ...that statement was incorrect; I had forgotten why I installed the pre-amp so I modified my statement - see second paragraph above.)