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History of the manufacturer  

Racal Engineering / Instruments / Electronics Ltd., Bracknell

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Name: Racal Engineering / Instruments / Electronics Ltd., Bracknell    (GB)  
Abbreviation: racal
Products: Model types Others
Summary:

Racal Engineering / Racal Instruments Ltd.
Bracknell

Racal Electronics Ltd.   
Bracknell, Berkshire (1962)

Racal Communications Ltd.
Western Road, Bracknell, Berkshire (1965)

 

Founded: 1950
Production: 1951 -
History:
Racal Ltd. wurde 1950 von Ray Brown und George Calder Cunningham, ehemaligen Plessey-Mitarbeitern gegründet. Der Firmenname leitet sich aus den Vornamen der Gründer ab: RAy - CALder. Mit dem kommerziellen Kurzwellenempfänger RA-17 führte Racal das Prinzip der "Wadley Loop" - einer speziellen, besonderes stabilen Regelschleife zur Oszillatorsteuerung (nach dessen Erfinder und damaligem Mitarbeiter, Dr. Trevor Lloyd Wadley, 1920 - 21.05.1981) - in den professionellen Empfängerbau ein.

In 1951 Racal Electronics Ltd was registered as a private company to supply electronic equipment (previously Racal Engineering Ltd).

Aus der Racal Engineering Ltd. wurde 1979 die Racal Communications Ltd., 1990 wurde sie mit dem Zweig der militärischen Kommunikationstechnologie in Racal Radio Ltd. übergeführt, 2000 in die Thomson-CSF Racal übernommen. Racal UK war die Muttergesellschaft von Vodafone.
Der US-amerikanische Zweig Racal Communications Inc. war 1965 - 1971 in Silver Spring und 1972 - 1997 in Rockville beheimatet.

This manufacturer was suggested by Martin Bösch.


Some models:
Country Year Name 1st Tube Notes
GB  57–62 RA-17L [Mk III] 6F33  Coverage 980 - 30000 kHz, AM/SSB with BFO, linear analog readout (ca. 1 kHz). First profe... 
GB  62 Counter-Timer SA-516   Based upon the 10MHz frequency Racal type SA-505, this instrument is aimed at particular a... 
GB  65 Dual Diversity Receiving Terminal RA.133   This dual unit is to receive broadcast transmissions to rebrodcast by local transmitter or... 
GB  58 SSB Radiotelephone TRA55   The TRA55 is an early SSB transceiver rated at 60 watts output and operates on four crysta... 
GB  58 SSB Radiotelephone TRA55B 12AT7  4 channel, crystal locked SSB transeiver. The TRA55B SSB transceiver is a later version... 
GB  54 RA-17 EF91  General coverage receiver 980 - 30000 kHz, AM, SSB (BFO). IF bandwidths 0,1 / 0,3 / 0,75 ... 
GB  57 RA-17 [Mk II] EF91  General coverage receiver 980 - 30000 kHz, AM, SSB (BFO). IF bandwidths 0,1 / 0,3 / 0,75 ... 
GB  57 RA-17C-12 6AU6  General coverage receiver 980 - 30000 kHz, AM, SSB (BFO). IF bandwidths 0,1 / 0,3 / 1,2 /... 
GB  58–62 RA-117 M8100  Coverage 980 - 30000 kHz, AM/SSB with BFO, linear analog readout (ca. 1 kHz). Standard ban... 
GB  75 Frequenzzähler 9917A   Flaches Tischgerät. Zwei Eingänge: Input A 40-560 MHz, Input B 10 Hz - 60 MHz. 
GB  79–90 RA 1792   Receiving mode: AM, USB, LSB, ISb optional, CW, FM:Sensivity: [for (S+B)/B = 10 dB]: Frequ... 
GB  67–69 Twin Channel Receiver RA-153   Coverage 980 - 30000 kHz, AM/SSB with BFO, linear analog readout (ca. 1 kHz). Bandwidths a... 

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