Isn't analog TV transmitted on an FM carrier signal? An FM receiver receiving two signals of the same frequency should synchronize on one, or possibly oscillat

Isn't analog TV transmitted on an FM carrier signal? An FM receiver receiving two signals of the same frequency should synchronize on one, or possibly oscillate between the two. So it seems like his antenna is placed exactly where the two signals are in phase, making them indistinguishable to the receiver. Maybe he could put the signals out of phase by moving his antenna to the other end of the roof?