You may remember a long time ago when CBLT was still on Channel 6 and you were able to get their audio at 87.5 on your FM dial. Years later, it was the Global transmitter that let you listen to its Channel 6 rebroadcaster if you were in range. 

Once Canada transitioned to digital TV, all those signals disappeared for good. But in the U.S., 14 of them were grandfathered in and were allowed to broadcast as if they were radio stations. (One of them, a Chicago outlet affiliated with MeTV, became something of a popular well rated oldies station.) The question was - after the transition to HDTV, were these "radio stations" legal?

It's been a long time coming to an answer, but the FCC down south has decided the 14 remaining American outlets using that frequency can, in fact, stay on the air and can continue as radio stations. But no new ones can ever be applied for anywhere and these so-called "Franken FM's" will be the last of their kind. 

I actually wish the CRTC would allow something similar here if it were possible - with an FM dial so crowded in the GTA, there isn't room for any new stations. It would open up at least one frequency for a newcomer. But it's not to be and Canadian regulators have permanently nixed the "channel six." 

They Live! FCC Permanently Authorizes 14 FrankenFMs