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SRF-39. The SRF-39 is a portable AM / FM radio introduced in approximately 1992 by Sony. [ 1] It uses a single AA battery, as its analog electronics draw very little current. It was one of the first radios to use the CXA1129 30-pin integrated circuit, which later was responsible for the SRF-39's sensitive and selective performance. [ 2][ 3][ 1]
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.
Sony applied the "Walkman" brand to some transistor radios starting with the matching blue SRF-40 FM Walkman in 1980, [16] and added a radio system to some Walkman cassette models starting with the model WM-F1 in 1982. [17] The first model with Dolby noise-reduction system and an auto reverse function appeared in 1982. [18]
The Walkman E Series is a line of digital audio (DAP) and portable media (PMP) players, marketed by Sony as part of its Walkman range. E Series devices have been marketed since 2000, although in its current form since 2008 as entry-level, candybar styled players.
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Sony 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. There were more than 65 models of the ...
The Walkman S Series is a line of portable media players designed and developed by Sony, currently marketed in Japan. The S Series made their debut in the fall of 2006 and later were launched in other regions. Although the first generation of models had generic displays, all next generations of players of the S Series had TFT color displays and ...
including C 1, 25 July 1952. This manual supersedes FM 100–5, 15 June 1944. This manual supersedes FM 100–5, 15 June 1944. including C 1, 16 September 1942; C 2, 12 November 1942; and C 3, 26 April 1943. These regulations supersede FM 100–5, Tentative Field Service Regulations, Operations, October 1, 1939.