Public Emergency Radio of the United States

The Public Emergency Radio of the United States was a communications system planned during the cold war era in the 1970s, to be activated in anticipation of a nuclear attack. The radio system was designed to broadcast on 167, 179 and 191 kHz in the long wave radio band. The distribution stations would be activated by two "control stations" at 61.15 kHz, in Ault, Colorado and Cambridge, Kansas.

The system was not implemented.