Short Range Radio Sirens
Short-range radio sirens on fire trucks and ambulances. A howling signal transmitted over car radios would override loud-playing programs.
By Bob Dupwe, Russelville, Ark.
September 1958
Short-range radio sirens on fire trucks and ambulances. A howling signal transmitted over car radios would override loud-playing programs.
By Bob Dupwe, Russelville, Ark.
September 1958
Please note that as an Amazon Associate I earn from qualifying purchases.
Martin Gilliard is a participant in the Amazon EU Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.co.uk ** TEST **
You may also be interested in my other website leadership-and-development.com covering topics on leadership and personal development.