This is not my finest photograph, but I thought it was interesting that the Royal York had a radio room in the 1950s. I'm not sure what they did with it. All that equipment has probably been replaced with a couple of boxes in a closet. I spied this photo on the wall while walking around the Mezzanine of the hotel several weeks ago.
The caption reads "Mr. Billy Charlton, Radio Control Operator, the Royal York Hotel, 1950." I assume this means that there was some kind of transmitter in place. No mention of Mr. Charlton was found in some casual web searching.