(near Windsor; also serving Detroit, Michigan) CKGN-TV-2 channel 2 from Bancroft (serving Belleville) CKGN-TV-6 channel 6 from Gatineau, Quebec (Camp Fortune site, near Ottawa) CKGN-TV-22 channel 22 from Uxbridge (near Toronto) CKGN-TV-29 channel 29 from Oil Springs (near Sarnia) Original plans called for a seventh transmitter, CKGN-TV-36 from Maxville, near Cornwall. It would have primarily served Hawkesbury, but would have also provided a fairly strong grade B signal to Montreal. However, Global was forced to drop the Maxville transmitter from its proposal due to a CRTC moratorium on new stations in Montreal. The Cottam transmitter was beset by legal difficulties. Since it served Windsor, it was considered to be part of the Detroit market, in which Global did not hold the rights for all of its programming. While Global initially was able to supply alternate programming to the Cottam site, its initial financial difficulties prompted it to instead begin showing a slide during preempted shows, which often made up significant portions of the network's prime time lineup. The network quoted the cost of continuing to provide alternate programming to Windsor at $800,000 a year. At the same time, in an attempt to disclaim competition with American outlets, Global ceased sending listings to Detroit's newspapers. On August 29, 1977, the Cottam transmitter suffered an electrical fire that caused $300,000 in damage and took it out of commission. After considering restoring service from Cottam and finding issues with securing an appropriate transmitter and its insurance claim, the network began to contemplate ways of improving its service to Windsor. Further delays were incurred when concerns arose about potential polychlorinated biphenyl contamination of the site. In 1981, Global sought permission to build a higher-power successor to the Cottam station for the Windsor–Detroit market; the CRTC denied this application in December of that year. In 1986, the CRTC approved the relocation of the Cottam transmitter to Stevenson. Some time after this, the CIII-TV-22 call letters from the now-defunct Uxbridge transmitter were reassigned to the Stevenson transmitter, which then was activated in November 1988. The transmitter is located southwest of Wheatley, between Wheatley and Leamington, but its signal is aimed northeast (towards Chatham–Kent), and barely reaches Windsor and Detroit – presumably to protect the Detroit stations. In the early 1990s, additional transmitters were added to expand Global's footprint in Ontario. The Uxbridge transmitter was Canada's most powerful UHF transmitter, operating at the maximum allowable power of