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TheoryTron is a discontinued series of TVs created and marketed by Theorysonic from 1964 to 1989 and it was replaced by the current Nehervia television sets. It is available in NTSC, PAL and SECAM markets.
History
Theorysonic had entered the television market in 1964 along with the radio.
TheoryTron was criticized for its maximum frequency channels of 12, while its competitors' televisions has 13.
Watching UHF and cable TV channels requires a UHF converter or set-top-box for TheoryTron to watch more channels like channel 23.
Models
Image
Model
Released
Notes
TS-400
September 14, 1964
First TheoryTron-branded TV and also Theorysonic's first TV.
TS-415
August 13, 1965
TS-421
January 22, 1966
TS-430
June 26, 1968
TS-470
January 2, 1970
TS-484
March 13, 1971
TS-492
February 22, 1972
TS-500
September 14, 1974
TS-520
November 12, 1976
TS-535
July 3, 1977
TS-550
June 23, 1978
TS-575
March 13, 1980
TS-600
May 9, 1981
TS-620
February 22, 1982
TS-670
January 2, 1984
TS-690
May 19, 1984
TS-700
April 30, 1985
Last TheoryTron TV set.
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