We have a TiVo Premiere, and are now determined to get rid of Comcast cable TV. I put a Yagi antenna and ChannelMaster CM-7778 16 dB preamplifier in the attic, and the ATSC signal comes in clear and solid on TV straight from the preamplifier, and I was able to get it to both TVs' inputs by going through a ChannelMaster +8 dB 4-way distribution amplifier. Good stuff. Here's where the fun comes in: getting the TiVo Premiere to recognize all 5 channel groupings (6, 11, 27, 40, and 49) here in Tallahassee, FL. Here's what I've tried: - Antenna preamplifier straight into TiVo: 40 and 49 won't come in at all. - ChannelMaster+8 dB 4-way distribution amplifier: TiVo won't pick up a thing since all the channels are overdriven. - RadioShack 4-way distribution amplifier with adjustable gain: too strong or too weak no matter how much I fiddle with the gain dial. I pulled this amp out of storage as an experiment; I got it years ago because of a weak Comcast signal, and replaced it with the above ChannelMaster because of RadioShack's, er, quality issues. What should I do from here? Are there adjustable-gain preamplifiers that are higher-quality than RadioShack? Should I get a bunch of 3 dB attenuators and put them on the TiVo's input until it's happy? Help! Thanks!