The Q-Siren has been part of the fire fighting tradition for decades. “The Electric F” appears in Federal Signal catalogues dating back to 1931. The grille was part of a Federal Coaster Siren, Model “4” with an 8” rotor. Earlier lines of mechanical sirens included Models O, G, C, W and WF. These models were the basis for the design of the now famous Q-Siren. Versions of these early mechanical sirens were used on top of police cards, ambulances and, of course, fire trucks. Development of electronic sirens came in the 1940’s and 1950’s using vacuum tubes prior to the general use of transistorized sirens in the late 1960’s. Despite the new technologies the Q-Siren has remained a constant on most fire trucks in the name of tradition and quality. In 2000, Federal Signal introduced the electronic version of the Q-Siren, the e-Q2B. This new electronic siren features the traditional Q-Wail while incorporating several features of a standard electronic siren including “yelp”, “air horn” “PA” and radio rebroadcast. Recently, Federal Signal took steps to ensure the integrity of the Q-Siren sound by pursuing a trademark for the sound of the Q-Wail with the intention of preserving the tradition for generations to come.