 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
n |
other
important dates:
|
|
|
|
– |
1921
(or 1928): Police car dispatch radio, Detroit
|
|
|
|
– |
1935:
first telephone call around the world
|
|
|
|
– |
WW
II: rapid development of radio technology
|
|
|
|
– |
1974:
FCC (Federal Communications Commission)
|
|
|
|
allocates
40 MHz for cellular telephony
|
|
|
|
– |
1982:
European GSM (Groupe Speciale Mobile)
|
|
|
|
established
|
|
|
|
– |
1983
(or 1984): initial deployment of AMPS cellular
|
|
|
system
|
|