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E.H. Scott Radio Laboratories is sometimes confused with H.H. Scott. E.H. Scott was founded in 1925 by Chicago resident Ernest H. Scott. Its first product was the World's Record Super 8, a TRF (tuned radio frequency) design with typical harness wiring with 16 gauge silvered solid core copper wire employed in an array configuration that was typical to radios at the time. This construction ...
This is a list of rack-mount or tabletop communications receivers that include short wave frequencies. This list does not include handheld, portable or consumer grade equipment. Those that include VHF or UHF can be termed wideband receivers, whereas those without HF would be termed scanners, or surveillance receivers.
According to the 1935 instruction manual, [6] the HRO price was US$233, the external power supply (to reduce heat in the receiver cabinet and hum) [7] was US$26.50 less tubes, and a 7000 ohm speaker in a rack panel was US$30.00.
The AN/ARC-5 Command Radio Set is a series of radio receivers, transmitters, and accessories carried aboard U.S. Navy aircraft during World War II and for some years afterward. It is described as "a complete multi-channel radio transmitting and receiving set providing communication and navigation facilities for aircraft.
Hallicrafters founder William J. Halligan depicted in a 1944 magazine ad. William J. Halligan (1898–1992), founded Hallicrafters Company in Chicago in late 1932. Prior to this, he had been involved in radio parts sales for some years but decided the time was right for a handcrafted amateur radio receiver - the company name being a combination of Halli(gan) and (hand)crafters.
Modern shortwave radio receivers are relatively inexpensive and easily accessible, and many hobbyists use portable "world band" receivers and built-in telescopic antennas. Serious hobbyists may use communications receivers and outdoor antenna located away from electrical noise sources, such as a dipole made from wire and insulators.
One example is the Schmitt trigger (which is also known as a regenerative comparator), but the most common use of the term is in RF amplifiers, and especially regenerative receivers, to greatly increase the gain of a single amplifier stage.
Optonica amplifier (SM-3636) and tuner (ST-3636) from 1978. The Optonica brand was created and first launched by Sharp of Japan in 1975 to compete in the high-end audio market along with established brands such as Sansui Electric, Sony, Panasonic, Sanyo, Yamaha, Nakamichi, Onkyo, Fisher Electronics, Technics (brand), Pioneer Corporation, Kenwood Corporation, JVC, Harman Kardon and Marantz.
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