Quik-Call I is most famous for use in the fire service. The 1970s television show, "Emergency!", depicted its use for base station ringdowns in the Los Angeles County Fire Department. In some systems, mobile radios had decoder options built into them. In Motorola mobile equipment, the decoders were housed in a box that bolted onto the radio control head. In the 1960s, it was also used to actuate tube-type receivers used to call out volunteer firefighters or to trigger sirens used to call out volunteers.