Piggie, thanks for your response.
Yes, I have used an amplifier since the first couple of years.
The amp is a preamp located in the middle of the antenna, and plugged into the same tv strip.
I have not used a rotor.
I will definitely replace the coax. Can cat5 be used, or is that not for antennas?
I have one tv, located next to the fireplace. The coax is 25 to 30 feet.
If you were looking for one antenna to pick them all up without a rotator, it might be possible but it would be close and probably not receive consistently as many channels you would with something like you have with a rotator.
In that case I will gladly use a rotor.
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I've used an antenna on the chimney here for the last 20 plus years. First with an old discarded antenna from a neighbor, which picked up 4 or 5 stations, some of them fuzzy. The addition of a RS amplifier improved this greatly to 9 stations. In addition, stations were being picked up from Mt. Wilson 140 miles away, which was quite encouraging. However, when I replaced the old falling apart antenna and twin lead with RG6 and a new one, the extra stations disappeared. All during this time the antenna was pointed SE with a guesstimate, which I had calculated from a map, and sighted to neighborhood landmarks from the roof.
The amplifier was replaced a few years ago, and I turned the antenna around to 333 degrees, again sighting to landmarks from the roof, with the help of the antennaweb map. Bingo, 19 stations! A few were duplicates, but reception was good, including PBS in either direction. The antenna is still pointed at ~333 degrees, but perhaps 139 would be better, with the help of the antennaweb map. With the advent of digital, a 1/2 dozen stations were lost. Some can be picked up with the converter off but not well. PBS never came in on the converter. The main 139 degree station did but since disappeared.