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The DB-4 is advertised to have over 13 dB of gain only in the UHF band (CH 14 - 69) It should be more than enough.
An Antennacraft Y10713 is a high band VHF (only) antenna advertised to have over 9 dB of gain.
The Winegard HD7698 is a combination UHF / VHF antenna. It's designed to cover the high VHF band (CH 7 - 13) plus all of the UHF band It is advertised to have from 11 to 14 dB of gain in each band.
The HBU-44 is a combination UHF / VHF antenna. It's designed to cover the high VHF band (CH 7 - 13) plus all of the UHF band It is advertised to have about 8 dB of gain in each band.
My suggestion would be to pick one design or the other, not stir the two together. Yes, I think grounding is a good idea.
John and I are looking at predicted signal levels, not distance. We are able to estimate performance far more accurately using gain and loss values measured in decibels than the non RF measure of distance.
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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; 1-Feb-2011 at 1:53 AM.
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