Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!apple!sun-barr!newstop!jethro!Sun.COM!acm From: acm@Sun.COM (Andrew MacRae) Newsgroups: sci.electronics Subject: Re: "spiking" of cable-TV descramblers Message-ID: <4207@jethro.Corp.Sun.COM> Date: 28 May 91 04:43:04 GMT References: <13867@exodus.Eng.Sun.COM> <1991May23.190150.3982@rodan.acs.syr.edu> <1991May27.150924.3482@jts.com> Sender: news@jethro.Corp.Sun.COM Reply-To: acm@Sun.COM (Andrew MacRae) Distribution: na Organization: Sun Microsystems, Mountain View CA Lines: 13 In article <1991May27.150924.3482@jts.com>, gil@jts.com (Gil Hauer ) writes: > It was my impression that cable television service is basically a one > way communication channel (i.e. out from the head-end). Is this not > the case any more? If it is one way, how can the descramblers be > "polled"? The repeating amplifiers used in cable systems are all two way. At least that is what I was told back in '73 when we used to broadcast our own shows over the community access channel at college. I've always thought that cable would make a nice way for underground groups to communicate.