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Old 24-Oct-2014, 3:16 PM   #18
devidog
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Join Date: Oct 2014
Location: St Louis MO
Posts: 34
Quote:
Originally Posted by timgr View Post
Not an antenna engineer, or part of the industry, but I am an engineer.

12 and 8 should be fine with a Y5713 pointed at them, no amplifier, assuming there are no trees or buildings blocking the horizon. Then pick how much you want to spend on the UHF antenna. An Antennas Direct DB4 would probably do it, pointed at 281. 15 is considerably down from 17. You could buy a cheap UHF antenna like this one http://www.ebay.com/itm/Eagle-Aspen-...62798993&rt=nc and try it out.

You can buy combined antennas like these http://www.antennacraft.net/Antennas/AntennasHBU.html but I think you may need the extra sensitivity of a dedicated UHF antenna to pull in 15 reliably.
I already have a DB8B and a rotor. I'm thinking a vhf pointed between 12 and 8, say 306 deg. then the rotor and Uhf mounted on top, utilizing the rotor to max out the signal on 17 and 15. There are no buildings in the LOS to the horizon and some tree trimming should take care of the one close by limb. There are some electric lines that kind of cross the path... any concerns here? A few more questions... any need to use a pre-amp? I have a crimper, I've read where the compression fittings are preferred. Is this a necessary expense or will crimps and tape be adequate?
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