Hi all,

In the past I have noticed that my clients with ATT (Comcast now) and Bresnan Cable could sign up for internet access, and when the internet was brought in, they would then add a splitter and get a bunch of channels in addition to the internet...

Has any one heard if this is still possible, or if the cable co's have figured out a way to block signal OTHER than high speed altogether?

I've had two customers call and ask. I have told them to call the cable co's and PAY for the cable...but now as a tech, I'm curious if there is a way to filter these signals out when they are so similiar...it's intrigueing really!

avdude
site admin
www.integrationpros.com

This message was edited by avdude on 10/24/03 23:54.

As far as I've seen around here, they can block out most of the channels but not all (or at least it's too expensive to block them all out). I think a friend who doesn't get cable TV had maybe 8 channels at the bottom of the dial.

Yes the channels can and are blocked at least at Comcast cable in Portland, Or

I have a broadband connection without the cable portion. I get no channels at all. They must have a notch filter on the pole.

There is a passive bandpass filter inline at the drop. just like the negative filters that block hbo ,cine , etc. if you don't sub , this is a negative filter that blocks all ntsc ch's ( 2 - ** [like ch 68 , 78 etc] ). These filters block a freq. range like 48MHz to 600MHz and they let any signal below or above pass.

Comcast (ATT) in the dallas market is / has been putting these band pass filters on for about a year now , and only retrofitting accounts as they service them. so its very likely that you may not have one if your service has been uninterupped for over a year.

prior to a year ago , att was having problems w/ the return path levels w/ the BPF's inline , so they were not used unless T.O.S. was suspect.

Don't know about elsewhere , but when Comcast took over att in dallas , the new pricing was acually as cheap to have exp. basic cable and broadband service for about the same money as att was charging only for broadband service.

Buddy B
retrobrew