Beginning in 2007 , Entercom moved most of its Celtics coverage to WEEI .
Entercom assumed the broadcast rights in 2005 from WWZN and WRKO became the flagship station .
Beginning in 2007 , Entercom moved most of WRKO 's Celtics coverage to WEEI .
Entercom assumed the broadcast rights in 2005 from WWZN and WRKO became the flagship station .