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I replaced the amplifier that came with my SS 3000 antenna with a Channel Master CM-3410. From what literature I could find, the amplifier that came with the antenna had a 7 to 10 dB gain. The CM-3410 is advertised at a 15dB gain.
With the stronger amplifier I wasn't able to get virtual channel 8 (broadcast on both real channel 9 and real channel 17) or virtual channel 20 (broadcast on virtual channel 21).
I switched back to the amplifier that came with the antenna and started getting both channels again. I guess that I will leave things as they are, but am puzzled why the stronger amplifier gave me worse results with these two "problem" channels.
From what I can determine, most of the broadcast towers for Indianapolis are clumped together in the NW side of town. I am located on the SE side of town--about 17 miles away. I am told that virtual channel 8 is a problem in my area because it is broadcast at relatively low power. Virtural channel 8 is a problem because their broadcast tower is only about half the height that the other channels are using.
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