Article View: sci.electronics
Article #10459Re: Cable TV question
From: John Whitmore
Date: Thu, 28 Feb 1991 01:44
Date: Thu, 28 Feb 1991 01:44
37 lines
2029 bytes
2029 bytes
In article <471@pyrite.nj.pyramid.com> dcm@pyrite.nj.pyramid.com (David C. Miller) writes: >Since this is an 8 event VCR, I find it frustrating to have to >switch between the internal and external tuner. If I go away >for a weekend, I have to choose to record only the unscrambled >channels or only the scrambled channel. > >What I'm looking for is a way of adding a circuit that will >effectively unscramble the pay channel in place. > > Cable Tuner +----- Channel 3 out > Descrambler | >Incoming cable with +-----+ v >scrambled signal on +------| |----+ >channel 28 / +-----+ \+----+ >--------------------+ | |------------+ > ^\ /+----+ >cable splitter -----+ +-----------------+ ^ > | > | >Device that blanks out channel 28 on --+ >straight through line, then map channel 3 >from the tuner to channel 28. You can do this with a UHF block converter; put the converter after the descrambler, and it will turn the 'CH 3' output into a UHF channel, which can go into your VCR's UHF input (or to a UHF/VHF combiner/splitter). It may in fact be more convenient to feed the descrambled signal straight, and mix everything else in the cable signal to UHF (so that you can set your VCR tuner to 'normal' instead of 'cable' tuning). Block converters are available widely (try Radio Shack for instance). John Whitmore
Technical Details
Message-ID:
<17336@milton.u.washington.edu>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!sdd.hp.com!ucsd!ucbvax!bloom-beacon!mit-eddie!uw-beaver!milton!whitReferences:
<471@pyrite.nj.pyramid.com>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!sdd.hp.com!ucsd!ucbvax!bloom-beacon!mit-eddie!uw-beaver!milton!whit From: whit@milton.u.washington.edu (John Whitmore) Newsgroups: sci.electronics Subject: Re: Cable TV question Message-ID: <17336@milton.u.washington.edu> Date: 28 Feb 91 01:44:06 GMT References: <471@pyrite.nj.pyramid.com> Organization: University of Washington, Seattle Lines: 37