So if I had Internet only service through a cable company, would the coax line deliver CATV channels too? Can somebody please educate me on how they can control what is or isn't transmitted through the COAX line?????

Cable internet service usually runs in the 20 to 50 mhz range, with standard cable channels being delivered higher up, starting with channel 2 at 55.25 mhz. If the install guy does his job right, he will attach an inline filter to your main input line that blocks all RF signal above 51 mhz, thus delivering internet service only and no viewable TV signal at the wall outlet. If he didn't put a filter on, you will be able to watch any unblocked channels already present on the line, yes. I've been a CATV splicer and tech for ten years.

I have cable internet and no TV. The install guy made sure I didn't have TV as he said he had to install a filter on the pole to block TV. But I never checked and wouldn't take it even it it was free. A pair of rabbit ears will get you your locals in high def. But the filter is usually put someplace where the customer cannot access it.



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