WGBH Founder Ralph Lowell announces the station's first radio broadcast featuring the Boston Symphony Orchestra at Symphony Hall on October 6, 1951. Listen • 0:52 WGBH Founder Ralph Lowell announces ...

Toni also reports for 89.7 WGBH-FM. Prior to joining Greater Boston, Toni was an associate producer at ABCNews, where she helped produce the OnCall+ multimedia online medical resource project and ...

FM radio works the same way that AM radio works. The difference is in how the carrier wave is modulated, or altered. With AM radio, the amplitude, or overall strength, of the signal is varied to ...