A request by a Canadian college radio station to mount a 100-watt repeater in Montreal has triggered stiff opposition from Vermont Public Radio, whose coverage in the market would suffer interference if the signal were approved. The Concordia Student Broadcasting Corporation, a nonprofit connected to Montreal’s Concordia University, operates CJLO 1690 AM. An area near one of Concordia’s campuses receives the AM signal infrequently if at all. An engineer looked for room on Montreal’s crowded FM band to accommodate a 100-watt repeater, which would fill the hole in the AM signal. The proposed signal, 107.9 FM, is also used by VPR’s Burlington station, about 100 miles away.