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Oliver Lodge and the origins of spark transmission
The birth pains of radio
Marconis Irish connections recalled
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5-7 September aerial amateur radio amplifier apparatus Atmos band bandwidth Brant Rock British broadcasting capacitors channel Clifden coherer coil Conference Publication 411 crystal detector diode distance early earth effect electrical electromagnetic waves electronic ELF band engineers equipment experimental experiments Fessenden field filters Fleming Guglielmo Marconi Heinrich Hertz Hertzian waves high frequency inductance installed ionospheric later lightning Lodge London loop machine magnetic Marconi Company masts microwave mixer modulation Navy operation oscillator output patent Poldhu Preece problem Proc produced radiation radio amateurs radio communication range receiver resonant rotary gap rotating rotor Royal satellite Schumann resonance scintillation September 1995 ships signal space spark gap spark transmitter spectrum station synthesiser techniques Telecommunications Telefunken telephone theory tion transatlantic transmission tuned circuit valve voltage wavelength wire wireless communications wireless telegraphy