Posted 04 October 2007 - 02:12 PM
Any suggstions on the best way to hanlde multipath on the HR20 with a weak/moderate signal? I am only ~20 miles from Atlanta, but have a 600-700 ft mountain/hill in the line of site about 1-2 miles away. I have a 4228 antenna on the roof and added a 7777 pre amp but I still get variable signals on some channels. I suspect multipath and less than optimum signal to noise ratio. My Sammy DLP set does a better job of handling the signal than does the HR20's tuner. Any suggestion on how to help the HR20 out? Variable attenuator perhaps?
You could try a CM 3022
. They have a narrower beam width and greater gain than the 4228, but you might have a problem with stations beyond a 30 degree beam width. If that's a problem, you could use them both pointed in different directions(with separate feed lines only!) and switch back and forth with one of those little, inexpensive 2-way slide switches you can still buy at Radio Shack. They even carry IR remote control coax switches. I tested them both, and the insertion loss is negligible.
Be careful with those antenna amplifiers. They are subject to "front end overload" from nearby transmitters, and the result is NO ATSC picture at all on only certain channels.
All that being said, the HR20's have a set of poor OTA tuners, and many people have problems with certain channels that any H20-600 or new TV has no problem with. See also this thread: Trouble With OTA Reception - HR20-700
Stew in Florida
HR21-100 (eSATA: Seagate Barracuda 750gb/Antec MX-1), Mitsubishi LT-46131 (HDMI), Onkyo A/V (optical), Slingbox Pro/WLI-TX4-G54HP
HR20-700 (eSATA: FreeAgent Pro 750gb), Mitsubishi LT-46131 (HDMI), Pioneer A/V (optical)
HR20-700, Mitsubishi LT-37132 (HDMI), Sony A/V (optical)
HR20-700, Mitsubishi WD-65731 (HDMI)
H20-600 (x 2)