 Instead, the city was folded into the Toronto market.CHEX-TV-2 signed on the air in 1992, when CBC Television affiliate CHEX-TV in Peterborough began relaying its programming on a new rebroadcast transmitter in Oshawa; prior to 1988, the UHF channel 22 allocation had been used by CIII-TV's Toronto-area transmitter (and "de facto" flagship transmitter) in Uxbridge.In 1993, the Oshawa transmitter became a semi-satellite with some slight differences in local programming.