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A tuned radio frequency receiver (or TRF receiver) is a type of radio receiver that is composed of one or more tuned radio frequency (RF) amplifier stages followed by a detector (demodulator) circuit to extract the audio signal and usually an audio frequency amplifier. This type of receiver was popular in the 1920s.
Audio reproduction quality of TRF sets was limited by the available loudspeakers. "High Fidelity" was not to become a radio marketing concept until the mid-1930s and was not realized until the advent of FM broadcasting. Reaction sets, also known as regenerative receivers, rely on positive feedback to achieve adequate gain. This approach ...
The Neutrodyne radio receiver, invented in 1922 by Louis Hazeltine, was a particular type of tuned radio frequency (TRF) receiver, in which the instability-causing inter-electrode capacitance of the triode RF tubes is cancelled out or "neutralized" [1] [2] to prevent parasitic oscillations which caused "squealing" or "howling" noises in the speakers of early radio sets.
The Florida Bar has opened an investigation into possible wrongdoing by a Florida attorney whose manipulation of the foreclosure auction process was exposed in the Miami Herald.. The Bar complaint ...
The Neutrodyne receiver, invented in 1922 by Louis Hazeltine, [133] [134] was a TRF receiver with a "neutralizing" circuit added to each radio amplification stage to cancel the feedback to prevent the oscillations which caused the annoying whistles in the TRF.
A government auction or a public auction is an auction held on behalf of a government in which the property to be auctioned is either property owned by the government or property which is sold under the authority of a court of law or a government agency with similar authority.
Bid4Assets has conducted tax sales via online auction for more than half of the counties in Washington. In October, 2010, Bid4Assets hosted one of the largest online real estate auctions in the history of the United States in which over 13,000 properties located in Wayne County, Michigan, were auctioned due to unpaid real estate taxes. [11]
The reflex receiver should not be confused with a regenerative receiver, in which the same signal is fed back from the output of the amplifier to its input. In the reflex circuit it is only the audio extracted by the demodulator which is added to the amplifier input, so there are two separate signals at different frequencies passing through the ...
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