TORONTO - High Fidelity channels Oasis HD, Equator HD, Treasure HD and Rush HD have begun a month long free preview.Available on Rogers, Bell TV, EastLink, Sasktel and Source Cable, the company hired ad agency Endeavour to handle the campaign and the media buy, which features radio, television, and print elements.“We know once viewers sample our exceptional programming, they love our channels and stay with us,” said High Fidelity HDTV co-founder Ken Murphy, in a statement. “We chose Endeavour to help convey the tremendous visual quality of our HD line up in a consumer campaign that targets Ontario viewers.”To complement...