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| Before I had Cablecom, my TV picked up the analogue channels through same socket (the old coax style, or aerial socket). My cablecom box plugged into the very same socket.
So my understanding is, that there is a digital signal broadcast alongside the analogue, but it is encrypted, the cablecom box just decodes the signal. That's why you don't pick up many free to air channels. | |
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I'm presently on analogue TV and internet via Cablecom. When I moved in, the socket on the wall was a standard twin TV/Radio aerial socket. When I ordered Cablecom internet, as part of the inspection they carried out, this socket was replaced with the newer style one which has a third connector for the "cable modem".
I watched 'em do it, and noted that there is only one coax wire feeding the socket, so no rewiring back to wherever the cable enters the house/building should be required (unless it's too old or faulty and requires replacing, of course).
TV and radio connect as before, and don't go through the modem.
So yes, the analogue TV/radio and digital (internet) signals all come down the same line. You just need the appropriate box of tricks (internet and/or TV) to decode the digital parts.