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The CM-7777 might be at risk of overload or at least generating some inter-modulation-distortion. I'm not convinced you would see a significant change in overall system performance if you changed to another preamp.
IMO, your best improvements are going to come from mounting height/location... Overcome / avoid obstructions (Top of the list I think). And, added passive gain... Antenna gain is always better than amplifier gain. Antenna gain does not come at the cost of added noise and distortion. Amplifiers are for 'pushing' signal through cable and splitter loss. Amplifiers can not and do not 'pull' signal from the coax, antenna or air. Amp gain in excess of your distribution losses is of little or no value.
If you were starting from scratch or want an overall system upgrade, the Antennas Direct 91XG, Antennacraft Y10713 and Antennacraft 10G221 make a high performance combination. If you are using a rotator, similar to the Channel Master CM-9521A, the NTE TB-105 thrust bearing is a great add on that takes a lot of strain off the rotator housing... With a big antenna or combination, it's worth it.
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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)
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Last edited by GroundUrMast; 14-Aug-2013 at 2:09 AM.
Reason: The purpose of amplifiers, formatting, gramar
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