CATV RF Notch Filter

Hi, UPDATE:

I finally received a quote, $185.00 plus $20.00 shipping. Since this filter has to be custom made, the price is high.

John

Hello, and I have to ask - What do want to do with it? These filters were used back in the 80s on analog CATV systems at the subscriber's location to allow for authorized reception of premium channels such as HBO and Cinemax. If you tried to view these channels without the filter all you got was garbage on the screen and most often no discernible audio.

For their intended purpose the notch filters would be useless on today's digitally encrypted systems. Most of the filters I've seen were mounted in a metal cylinder with type F connectors on either end. They were inserted between the incoming CATV RF cable and the set-top box. They could also be installed within a distribution box in apartment complexes. Sincerely,

Hi, FINAL UPDATE:

I received the filter from Tin Lee Electronics. This filter removed the streaming promos that ANNOY me. The results, with the promos "removed", when I go to "On Demand" (a small delay occurs), now I see whatever channel I was viewing, instead of promos. This can be handy when commercials come on, and I can check what is "on demand" during commercials of a program I am watching.

With my signal generator, I corrupted the streaming video to the degree it could not be decoded. The filter removed the signal.

John