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Family Tree of mobile
Mobile telephones had been around for almost 60 years before we got our first cellphones in the 1980s.

To start with there were radiotelephones for ships, aircraft and military vehicles. Then radiophones for cars and finally personal mobiles.
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Early car phones (1940s) : 'car one calling control...'

Today it's impossible to imagine how taxi firms or the police, fire and ambulance services could operate without mobile radio.

This story goes back over 50 years. Although VHF radio bands had been allocated for police use in 1939, the coming of the Second World War delayed a radio network for police cars until 1946. The system, provided for the Metropolitan Police and covering the entire Greater London area, drew on Army experience, using tens of thousands of VHF radio sets built for use in the war.

The first business application of mobile radio came a year later, in 1947, for a taxi company in Cambridge. From these humble beginnings developed a major industry serving well over 50,000 commercial and public authority users employing more than half a million mobile radio sets.

Fifty years ago, a simple radio and its power generator equipment filled the entire boot of a car. Nowadays, a set with the same power is the size of a hardback book!

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