WLLH (W Lowell Lawrence Haverhill) has been on the air since 1934, originally at 1370 AM and now 1400 AM.
In the 1940s Ed McMahon began his broadcasting career with a job at WLLH. He was best known as Johnny Carson's announcer and sidekick on the Tonight Show from 1962 to 1992. McMahon passed away yesterday at age 86.
In 2005 the station became an ESPN Radio affiliate. WLLH is licensed to Lowell, Massachusetts.