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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.
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.
English: Block diagram of a tuned radio frequency (TRF) receiver, a type of radio receiver circuit invented in 1916 by Ernst Alexanderson and widely used in the vacuum tube receivers of the 1920s.
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]
The Norfolk, Virginia Beach and Southern Railroad was a 19th-century railroad that operated a line from downtown Norfolk to the Virginia Beach oceanfront, where the railroad owned and operated the Princess Anne Hotel.
The developer contended that many major events currently bypass Hampton Roads because existing indoor venues, with lower seating capacities, are too small and lack the necessary staging capabilities for large-scale performances. The proposed Virginia Beach Arena would have been the largest in Virginia capable of staging these events.
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de Witt Cottage, also known as Holland Cottage and Wittenzand, is a historic home located at Virginia Beach, Virginia. It was built in 1895, and is a two-story, L-shaped oceanfront brick cottage surrounded on three sides by a one-story porch. It has Queen Anne style decorative detailing. It has a full basement and hipped roof with dormers.