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2. Transistor radio - Wikipedia

   en.wikipedia.org/wiki/Transistor_radio

   A transistor radio is a small portable radio receiver that uses transistor -based circuitry. Following the invention of the transistor in 1947—which revolutionized the field of consumer electronics by introducing small but powerful, convenient hand-held devices—the Regency TR-1 was released in 1954 becoming the first commercial transistor ...

3. Sony Watchman - Wikipedia

   en.wikipedia.org/wiki/Sony_Watchman

   Sony Watchman. Sony Sports Watchman. Sony MEGA Watchman. The Sony Watchman is a line of portable pocket televisions trademarked and produced by Sony. The line was introduced in 1982 [ 1] and discontinued in 2000. Its name came from a portmanteau formed of "Watch" (watching television) and "man" from Sony's Walkman personal cassette audio players.

4. List of Sony products - Wikipedia

   en.wikipedia.org/wiki/List_of_Sony_products

   Sony Professional offers professional solutions for cinematography, filmmaking, news production, live production, education, corporate and healthcare needs. [ 2] Professional cameras. Studio and Broadcast Cameras. Digital Cinema Cameras. Camcorders. PTZ and Remote Cameras. Broadcast and production.

5. List of Sony Walkman products - Wikipedia

   en.wikipedia.org/wiki/List_of_Sony_Walkman_products

   Through the 1980s and 1990s, Sony created many versions and variations in the cassette tape Walkman line [ 4] such as the DD series and WM series. Below is an incomplete list of cassette tape based Walkman models. Sony Walkman TPS-L2, from 1979. Sony Walkman WM-F15, released 1984. Sony Walkman WM-28, early 1980s. Sony Walkman WM-F77, Circa 1986.

6. Radio receiver - Wikipedia

   en.wikipedia.org/wiki/Radio_receiver

   A portable battery-powered AM/FM broadcast receiver, used to listen to audio broadcast by local radio stations. A modern communications receiver, used in two-way radio communication stations to talk with remote locations by shortwave radio. Girl listening to vacuum tube console radio in the 1940s.

7. Zenith Electronics - Wikipedia

   en.wikipedia.org/wiki/Zenith_Electronics

   Zenith Electronics, LLC, is an American research and development company that develops ATSC and digital rights management technologies. It is owned by the South Korean company LG Electronics. Zenith was previously an American brand of consumer electronics, a manufacturer of radio and television receivers and other consumer electronics, and was ...