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Satellite TV antenna: The 8-Ball—a satellite TV antenna you can build for under $750. H. D. McCullough: 52/8: August 1981 Synthesized RF generator: The Programma-2 covers a range of 300 kHz to 30 MHz and costs about $3100 less than its commercial counterparts. Gary McClellan: 52/8: August 1981 Electronic musical horn: Don't blow your horn in ...
High level modulation uses class C amplifiers in a broadcast AM transmitter and only the final stage or final two stages are modulated, and all the earlier stages can be driven at a constant level. When modulation is applied to the plate of the final tube, a large audio amplifier is needed for the modulation stage, equal to 1/2 of the DC input ...
A broadcast transmitter is an electronic device that 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).
Amplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting messages with a radio wave.In amplitude modulation, the amplitude (signal strength) of the wave is varied in proportion to that of the message signal, such as an audio signal.
HD Radio logo. HD Radio (HDR) [1] is a trademark for a so-called in-band on-channel (IBOC) digital radio broadcast technology. HD radio generally simulcasts an existing analog radio station in digital format with less noise and with additional text information.
From famous car ads from Chrysler and Volkswagen to food shorts from Doritos and Mountain Dew, these are the Super Bowl's best commercials over the years. The 15 Best Super Bowl Commercials of All ...