-
Hertz sent electro magnetic waves
-
Marconi invented wireless telegraphing
-
Roberto Landell transmitted human voice over half a mile
-
Marconi built first radio factory
-
first radio news program
-
single sideband and frequency modulation were invented
-
Commercial television transmissions started in North America and Europe in the 1940s.
-
the Regency company introduced a pocket transistor radio, the TR-1, powered by a "standard 22.5 V Battery."
-
In the early 1960s, VOR systems finally became widespread for aircraft navigation; before that, aircraft used commercial AM radio stations for navigation. (AM stations are still marked on U.S. aviation charts).
-
first mobile cellphone
-
The GPS was created
-
malamud launches the first talk radio
-
CRB decided to have a $500 minimum fee per station
-
CRB makes web casters also pay $500
