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After re-reading your thread...
I've never seen RCA publish much in the way of technical specs.
For a very crude estimation, compare the HBU-11 by Antennacraft - http://www.antennacraft.net/pdfs/HBU11_.pdf
Is a telescoping mast a reasonable option for you? http://www.3starinc.com/telescoping_masts.html It would require guy wires and some able bodied help to raise it safely. The ANT-751 has a good shot at working for you if it can clear the tree tops.
I'm currently working on a tree mounted system... about 90' up a Western Red Cedar. A couple months of cable bills paid for the climbing gear...
If you're going to be forced to remain low (below the trees), use the biggest antenna available... the 7694 would be an improvement over the ANT-751, but not enough. go up to the HD7698P and a good rotator.
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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; 13-Aug-2013 at 4:50 AM.
Reason: clean the thread aup a bit
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