Re: RF Components

Chazman wrote:
>
> Just so I am clear; I could, for instance, have a video signal coming
> out of a standard channel modulator and then into a switchable
> scrambler. From there, the line would go into a cable plant and then
> out to, for instance, three television sets. Each of the lines to the
> individual TV sets could have a simple decoder that recognizes one (and
> only one) of the codes from the scrambler. This would allow a signal to
> go out to all sets but was only "readable" by one. Later, the scrambler
> could be switched again (remotely) and then the signal would only be
> readable by a different of the three sets.


The scrambling is done to the video BEFORE it goed to the modulator.

> Is that how it works? Am I missing something? Is this a cost effective
> solution? One can only assume that a switchable scrambler would cost
> far more than the single decoders.


The descramblers worked on a single channel, and were generallly built
into the same box as the cable converter to allow you to select the
chanel you wanted. If it was a scrambeld channel, the unit had to be
programmed to let you receive it. The other method is single chanel
traps to filter out a channel someone isn't supposed to get, but some
people will remove the trap. One name that comes to mind was Eagle, but
there were other companies making single channel traps, along with ones
that removed a block of channels.



> Once again, I really appreciate your help.
>
> Best,
>
> Chuck (from Denver)


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
.

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