The St. Louis Cardinals plan to offer 50,000 fans a free radio that can pick up the broadcasts via XM Radio – which carries all major league games via satellite transmission. The catch is that to get the radio, a six-month subscription for the service must be purchased – and that sells for about $13 a month. The move is being made to try to appease those who have lost access to the broadcasts because of the club’s move from KMOX (1120 AM) to KTRS (550 AM) as its flagship station. KTRS’ signal has a much smaller reach at night, when most of the games are played, than does KMOX. [STL Today via XM Ben]