Originally Posted by Robbers Bhell
They can serve the same "area", but can't be domiciled in the same city. Another example CKCO Kitchener and CFPL London both serve most of Southwestern Ontario.
Vancouver is an example of CTV and CTV2 broadcasting from the exact same antenna farm on Mount Seymour, but CTV2 is nominally based in Victoria BC with a main transmitter there, with the Vancouver transmitter being simply a repeater, according to the CRTC. It is all about satisfying the regulations, even though the net result is complete overlap.