Is the radio sector in the midst of a rebound? Judging by the stocks of most terrestrial conglomerates, the ‘hope factor’ is weak, though one research group is calling for modest gains this year. Media advisory firm BIA/Kelsey is now forecasting a 1.5 percent revenue gain in 2010 for US-based stations, followed by 2-4 percent improvements over the next few years. That is about as optimistic as it gets following an 18.4 percent plunge in 2009 to revenues to $13.7 billion. (more…)