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Racal Engineering Ltd.,
GB - Bracknell

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überarbeitet am 23.10.2010

Racal Ltd. has been founded in 1950 by Ray Brown and George Calder Cunningham, both former Plessey staff members. The company's name has been derived from the first letters of the first names of the two founders: RAy - CALder. With the commercial shortwave receiver RA-17. Racal introduced the principle of the "Wadley Loop Drift Cancelling System" into receiver design - the oscillator was controlled by a feedback loop to compensate oscillator drift leading to a very high receiver stability (the circuitry is named after the famous Racal engineer Dr. Trevor Lloyd Wadley, 1920 - 21.05.1981).

Racal Engineering Ltd. was renamed to Racal Communications Ltd. in 1979, in 1990 it was merged with the branch of military communications technology to form the Racal Radio Ltd., 2000 merged to Thomson-CSF Racal.

The US american branch Racal Communications Inc. was located in Silver Spring from 1965 - 1971 and in Rockville from 1972 - 1997.

RA-17 L: Doppelsuper, 980 kHz - 30 MHz; AM, SSB (BFO)
RA-1217: Doppelsuper, 980 kHz - 30 MHz; AM, USB/LSB, 0,2 / (0,5) / (1,2) / 3 / 8 / (13) KHz
RA-1772: Doppelsuper, 15 kHz - 30 MHz; AM, SSB, 0,3 / 1 / 3 / 6 kHz