Hello, collective wisdom and well of overheard conversation.

Can anyone out there tell me what frequencies are used for the digital cable signals? In particular, the cable system around here (Los Angeles) is Adelphia.

I am an installer and have clients with camera signals modulated onto previously unused cable channels. What happens now? Is digital above the regular cable channels? I know I will have to pass the modulated signals around any cable boxes in use, but those signals will not be able to be used on the same frequencies as the digital channels, box or none.

I saw this previously when some customers with outdoor antennas lost camera signals when DTV signals started to be sent out on UHF frequencies I had used for cameras.

So, any ideas or facts out there?

I don't often get the chance to visit here, so please share with everybody on this forum, and also email me if you can.

Thanks --

Ernie
HomeThtrLA@aol.com

Call Channel Vision and ask for TOM. He'll sell you a notch filter that cuts into the ANALOG signals so you can modulate. Only other thing is to modulate on 123 and 125.