MONTREAL – Momentum in the Canadian ad market helped to propel Astral to a “solid” first quarter of 2011.Consolidated revenues totalled $267.1 million for the three months ended November 30, 2010, an increase of 7% over the $250.7 million recorded last year for the same period. Consolidated net earnings increased by 11% over last year, rising to $53.3 million from $48.2 million."Towards the end of Fiscal 2010, we saw encouraging signs of recovery in the Canadian advertising markets", said president and CEO Ian Greenberg, in a statement. "Clearly, that momentum carried through to our first quarter and allowed us to...