The cover of the March 1953 issue of Radio News showed the new mobile communications unit for Philadelphia’s Civil Defense. According to the magazine, the unit featured complete and flexible facilities for all type of two-way communications, as well as a public adress system. It featured its own 15,000 watt power plant, along with both heating and air conditioning. In addition to police and fire frequencies, the 2, 10, and 75 meter amateur bands could be covered, permitting communications with other cities throughout the United States. And thanks to the Bell System, it included mobile telephone equipment as well as capability of up to 16 phone lines.