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Cone speakers were readily damaged; The sound of moving iron speakers has a strong unmistakable character. They were far from faithful in their reproduction of audio, and their technical specifications were poorly controlled. An example of this is their electrical impedance, which varied across the audio spectrum by a ratio of more than 100:1.
The feedlines feeding radio power from the transmitter to the huge flattop wire antenna are visible, top. A list of early wireless telegraphy radio stations of the Marconi Wireless Telegraph Co. Guglielmo Marconi developed the first practical radio transmitters and receivers between 1895 and 1901.
Collins S-Line, featuring separate power supply, receiver, transmitter, and speaker console, c. 1960s. Amateur radio equipment of past eras like the 1940s, 50s, and 60s that are separate vacuum tube transmitters and receivers (unlike modern transceivers) are an object of nostalgia, and many see rehabilitation and on-air use by enthusiasts. [18 ...
A broadcast transmitter is an electronic device which radiates radio waves modulated with information content intended to be received by the general public. Examples are a radio broadcasting transmitter which transmits audio (sound) to broadcast radio receivers (radios) owned by the public, or a television transmitter, which transmits moving images to television receivers (televisions).
Transmitter Tower (TV) (People's Television Network) South Tower (TV) (Radio Philippines Network) IBC 13 Transmitter Tower (TV) (Intercontinental Broadcasting Corporation) Tinang (SW) (Relay station IBB) Malolos (SW) (Relay station Radyo Pilipinas Worldwide, Voice of America) Malolos (MW) (Radyo Veritas, Transmitter No. 1 demolished because of ...
Wireless transmitters (2 C, 10 P) ... Borisova Gradina TV Tower; Broadcast relay station; Broadcast transmitter; C. Channel in a box; D.