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In operation, the band passes over two grooved pulleys rotated by a wind-up clockwork motor. [1] [2] The iron band passes through the center of a glass tube which is close wound with a single layer along several millimeters with number 36 gage silk-covered copper wire. This coil (C) functions as the radio frequency excitation coil.
Grundig began in 1945 with the establishment of a store named Fürth, Grundig & Wurzer (Radio-Vertrieb Fürth ), which sold radios and was headquartered in Fürth, northern Bavaria. After the Second World War, Max Grundig recognized the need for radios in Germany, and in 1947 produced a kit , while a factory and administration centre were built ...
The Majestic Model #71 introduced in 1927, for example, was a tuned radio frequency receiver with a 9-inch (23 cm) speaker, powered from AC house current. [10] This was a considerable improvement over previous radios having typically poor selectivity and producing inferior sound from old-fashioned horn speakers or earphones.
WNDD (92.5 MHz, "Wind FM") is a commercial FM radio station in Alachua, Florida, broadcasting to the Gainesville/Ocala, Florida market. As of 2024, the same programming is simulcast on station WYND-FM serving the Ocala - Silver Springs area.
Grundig Satellit 400 solid-state, digital shortwave receiver, c. 1986 [1]. Shortwave radio is radio transmission using radio frequencies in the shortwave bands (SW). There is no official definition of the band range, but it always includes all of the high frequency band (HF), which extends from 3 to 30 MHz (approximately 100 to 10 metres in wavelength).
The 27 MHz CB27/81 Bandplan is a list of the channel frequencies for FM CB radio in the United Kingdom.. Unlike CB usage in the United States, and subsequently elsewhere in the world, the original UK 40 channels progress in order with 10 kHz spacing.
WYND-FM (95.5 MHz, "Wind-FM") is a commercial radio station in Silver Springs, Florida, broadcasting to the Ocala, Florida area. As of 2024, the same programming is simulcast on station WNDD serving the Gainesville - Alachua area.
Trevor Graham Baylis CBE (13 May 1937 – 5 March 2018) was an English inventor best known for the wind-up radio.The radio, instead of relying on batteries or external electrical source, is powered by the user winding a crank.