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From: "gert baars"
Subject: Re: Antenna question
X-Newsreader: Microsoft Outlook Express 5.00.2919.6600
Date: Mon, 18 Nov 2002 08:15:18 GMT
NNTP-Posting-Date: Mon, 18 Nov 2002 09:15:18 MET
Organization: Chello Broadband
What you describe here is 'stacking' antenna's. This means they must be 1/4
wave apart. Then you need a stacking
transformer which are hard to make. Combining two equal antenna's will
provide only 3 dB's of gain.
Better is to use one antenna with an amplifier that you can buy in a TV shop
for reasonable price.
"Dave Fenner" schreef in bericht
> How are those side by side pair UHF yaggi array TV aerials
> I have two separate identical TV antennas in my roof, facing
> different directions. Each has own downlead. Now I would like to
> re-mount them to increase gain from one direction. How are the
> commercial pairs connected? Do I change connection at the top or
> can I do something with the downleads at the bottom end?
> I can see one way is a 3 coil transformer. Is there a simple trick
> like the way you can make a balun by looping the inner wire somehow?
> I just want to end up with a standard 70 ohm single co-ax connection
> with a bit more signal. TIA.
> Dave Fenner
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