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Old 14-Feb-2011, 4:02 PM   #18
Tower Guy
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Join Date: Dec 2009
Location: Delmar, NY
Posts: 1,236
Quote:
Originally Posted by LoTech View Post
I'm liking the idea of a passive repeater.
In your case totally passive won't work, the signal is too weak to start with. Some gain is necessary, but how much depends on multiple variables. I calculate that you'd need about 50 db of gain, and if the TX/RX antennas are 100' part, more than that amount of gain would not work (due to feedback). That's a small margin for error, so plan on 200' of separation or install the antennas on different sides of the hilltop.

The Eagle Aspen MATV amp that I posted earlier shows different gain specs on the Eagle Aspen web site than the Summit Source web site. You could start with two high gain preamps such as the Channel Master 7777, yet the solar power interface for the amp will need to be designed. I don't have a 7777 to reverse engineer. The Winegard AP series of amps uses a 18 volt wall wart supply with a three terminal regulator inside the preamp. I didn't take one apart to determine the voltage on the three terminal regulator. The HDP-269 amp doesn't have enough gain.

Strictly speaking, a booster must be licensed, but if you use the least amount of gain necessary and a channel 5 filter, no one will know. Your neighbors (not that you have many) could also access the signal.

Last edited by Tower Guy; 14-Feb-2011 at 4:45 PM.
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