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]
A variant of the SRF-39, the SRF-39FP, has a transparent case, designed to thwart contraband concealment. The radio often appears on the commissary lists of U.S. federal prisons, hence the "FP" suffix.[2][4]
The SRF-39 was followed by the SRF-49 in 1997, the PSY-03 in 1999, and the SRF-59 in 2001. These radios are popular in the DXing community due to their sensitivity, selectivity and ferrite antennas.[2][1]
See also
[edit]References
[edit]- ^ a b c "The Sony SRF-59 Sourcebook 2008-09-09-1". wenku.baidu.com. Baidu. Retrieved 28 January 2022.
- ^ a b c Hunt, Joshua (January 16, 2014). "The iPod of Prison". The New Yorker.
- ^ T. Okanobu, H. Tomiyama and H. Arimoto, "Advanced low voltage single chip radio IC". IEEE Transactions on Consumer Electronics, vol. 38, no. 3, pp. 465-475, Aug. 1992, doi: 10.1109/30.156724.
- ^ D'Onfro, Jillian. "This Prison Radio Lasts Longer Than An iPod, On One Battery". businessinsider.com. Business Insider. Retrieved 28 January 2022.
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