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10 résultats pour : radio transmissions

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TV transmission van with dish antenna , U.S.A. 1986.
UMG25A08_490

TV transmission van with dish antenna , U.S.A. 198...

Guglielmo Marconi.
UMG23A58_304

Guglielmo Marconi.

Worker operating a new radio teletypewriter service which allows for instantaneous transmission of written records without the aid of wires, has been perfected by the experts of the Bureau of Air Comm...
UMG21A22_093

Worker operating a new radio teletypewriter servic...

Guglielmo Marconi demonstrating apparatus he used in his first long distance radio transmissions in the 1890
UMG20B50_343

Guglielmo Marconi demonstrating apparatus he used ...

First world war radio
UMG20B28_303

First world war radio

Guglielmo Marconi
UMG20B23_125

Guglielmo Marconi

Radio Broadcast - Building the R.B. Lab Receiver 1926
UMG20A36_097

Radio Broadcast - Building the R.B. Lab Receiver 1...

Lighthouse, Mombasa
UMG20A07_121

Lighthouse, Mombasa

War On Radio Pirates
UMG20A13_167

War On Radio Pirates

Inventor Henri Fenal
UMG20A12_412

Inventor Henri Fenal