In the 60’s the AT&T Bell labs designed the first Analogue Mobile Network in order to create a wireless infrastructure for personal communications. In the 1972 the Motorola’s research and development team was leaded by Martin Cooper (named Marty), an electronics engineer from Chicago, which designed and tested the prototype of the modern cellular: DYNA-TAC (Dynamic Adaptive Total Area Coverage).
On the 3rd of April 1973 Cooper rang the number up of an hotel across the 6th street of New York in front of the Joe S.Engel’s office (a competitor of him from the AT&T Bell labs). This was the first personal wireless call of the history. The first DYNA-TAC was very heavy (around 1,5 Kg). The first commercial model was sold only in 1983 and the package was made up of: a battery charger, an handbook, the mobile, an antenna and a case. The weight was reduced from 1,5 kg to 800g and the battery lasted 30 minutes after recharging 10 hours. The price was around $4000 ($9000 in 2011).
When Cooper left the Motorola in the 1983, he co-founded Cellular Business Systems Inc. (CBSI) now Dynacall (Dyna LLC) with her wife, then Great Call Inc. in the 1986 and ArrayComm in the 1992. He is still an important entrepreneur and innovator of our century.