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This 1920s TRF radio manufactured by Signal is constructed on a breadboard Tuning a TRF receiver, like this 5 tube Neutrodyne set from 1924 with two stages of RF amplification, was a complicated process. The three tuned circuits, controlled by the 3 large knobs, had to be tuned in unison to the new station.
Schools in Virginia Beach, Virginia (1 C, 4 P) Pages in category "Buildings and structures in Virginia Beach, Virginia" The following 23 pages are in this category, out of 23 total.
This is intended to be a complete list of the properties and districts on the National Register of Historic Places in the independent city of Virginia Beach, Virginia, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map. [1]
VIRGINIA BEACH — Local history proponents are ramping up efforts to save a city-owned resort area building to keep it from being razed to make room for redevelopment. Councilman Worth Remick ...
Seatack, Virginia is a historic neighborhood and community borough of Virginia Beach, Virginia, that was located in what used to be Princess Anne County, and is now part of the Oceanfront resort strip and adjacent area of the independent city of Virginia Beach.
English: Block diagram of a tuned radio frequency (TRF) receiver, the simplest type of amplifying radio receiver circuit. It consists of one or more tuned RF amplifiers, each consisting of a tuned circuit which functioned as a bandpass filter followed by a radio frequency (RF) amplifier; a detector (demodulator) to extract the audio waveform from the radio carrier wave; followed by an audio ...
The Oceana Neighborhood Historic District encompasses an early 20th-century planned neighborhood subdivision in Virginia Beach, Virginia.It consists of 70 acres (28 ha), roughly bounded by Virginia Beach Boulevard, First Colonial Road, and North Oceana Boulevard.
Virginia Beach Oceanfront; Virginia Beach Sportsplex This page was last edited on 17 December 2016, at 07:31 (UTC). Text ...