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From: evans@decvax.DEC.COM (Marc Evans)
Newsgroups: sci.electronics
Subject: Re: TV Antennas
Keywords: Antenna TV
Message-ID: <482@decvax.decvax.dec.com.UUCP>
Date: 11 Dec 90 12:33:45 GMT
References: <12765@milton.u.washington.edu>
Sender: news@decvax.dec.com.UUCP
Reply-To: evans@decvax.DEC.COM
Organization: Synergytics
Lines: 27

In article <12765@milton.u.washington.edu>, amigo@milton.u.washington.edu (The Friend) writes:
|>      1. antenna rotator - gets to be a hassel rotating the antenna.

Although your initial experiments would require manual adjustment of the rotors
direction, I feel that I should point out that it is pretty easy to build a unit
which engages the rotor to a preset position based on the channel being watched
(you will need to modify the TV a bit to get this information). I have built one
which even has the ability to let the VCR channel override the TV channel, so that
if you are watching the TV and recording on the VCR, the VCR will get the better
picture.

|>      2. amplifier for VHF/UHF/FM - generally the one I have in mind
|>           has something like 25 dB gain...I'm wondering if this will
|>           help at all?

I have found this to be the key to most setups. The key here is to get the amplifier
as close the the signal source as possible. Rat-Shack sells a model of amp which is
mounted at the antenna, and use the coax to get voltage from a power unit located in
your house. This is the best setup I have seen, as compared to the amps which are
located many feet away from the antenna.

- Marc
-- 
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Marc Evans - WB1GRH - evans@decvax.DEC.COM  | Synergytics     (603)635-8876
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