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2. Perdio Radio - Wikipedia

   en.wikipedia.org/wiki/Perdio_Radio

   Perdio Radio. Perdio Radio was a British electronics company (Perdio Electronics Limited) founded by Derek Willmott (born 4 January 1924) and Joyce Willmott in 1955. Former RAF pilot Derek Willmott was a DECCA researcher developing RADAR applications and was already an inventor, with designs for multiple miniaturisation applications in consumer ...

3. Software-defined radio - Wikipedia

   en.wikipedia.org/wiki/Software-defined_radio

   Software-defined radio ( SDR) is a radio communication system where components that conventionally have been implemented in analog hardware (e.g. mixers, filters, amplifiers, modulators / demodulators, detectors, etc.) are instead implemented by means of software on a computer or embedded system. [1] While the concept of SDR is not new, the ...

4. History of radio - Wikipedia

   en.wikipedia.org/wiki/History_of_radio

   History of radio. The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy".

5. Trans-Oceanic - Wikipedia

   en.wikipedia.org/wiki/Trans-Oceanic

   Trans-Oceanic. A Trans-Oceanic model Y600. Shown on the left is a modern shortwave radio for comparison. The Trans-Oceanic (abbreviated T/O) was a brand of portable radios produced from 1941 to 1981 by Zenith Radio. They were characterized by heavy-duty, high-quality construction and their performance as shortwave receivers.

6. AN/PRC-77 Portable Transceiver - Wikipedia

   en.wikipedia.org/wiki/AN/PRC-77_Portable_Transceiver

   AN/PRC-77 Portable Transceiver. AN/PRC 77 radio and handset. Soldier using a PRC-77 (top) with the KY-38 "Manpack," part of the NESTOR voice encryption system that was used during the Vietnam War. U.S. Marine carrying a PRC-77 during a training exercise in 1989. AN/PRC 77 Radio Set is a manpack, portable VHF FM combat-net radio transceiver ...

7. Pye (electronics company) - Wikipedia

   en.wikipedia.org/wiki/Pye_(electronics_company)

   Telecommunications equipment. Parent. Philips. Pye Ltd was an electronics company founded in 1896 in Cambridge, England, as a manufacturer of scientific instruments. The company merged with EKCO in 1960. Philips of the Netherlands acquired a majority shareholding in 1967, and later gained full ownership.