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From: rdw2030@venus.tamu.edu
Newsgroups: sci.electronics
Subject: Re: Descramble Cable Using Filter?
Message-ID: <55553@lanl.gov>
Date: 29 Jun 90 08:08:31 GMT
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In article <2417@nems.dt.navy.mil>, downin@dtoa1.dt.navy.mil (Downin) writes...
>I was under the impression that all that was really done was the video
>sync signal was somehow reduced in signal strength thus causing the
>wavy picture and good sound.  If that technique is used all you would
>need would be a simple signal amplifier.  Anyone know for sure?
> 
>Dave Downin\

Check out the May 1990 issue of Radio-Electronics for a neat project that will
restore the sync signals (horizontal AND vertical) to a wide variety of sources.

There is also some discussion of methods of scrambling video.  This project will
allow MacroVision to be defeated, as well as the scrambling technique used on
direct satellite transmissions, and that from the local cable company (I speak
of the non-sound-distorting method!).

I haven't built it yet, but I will.  It should be interesting!  It's called the
Universal Descrambler!  Hehehe...

Mark C. Lowe - KB5III