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History of the manufacturer  

Standard Telephones and Cables Ltd. (STC); London, Foots Cray

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Name: Standard Telephones and Cables Ltd. (STC); London, Foots Cray    (GB)  
Micromesh tubes
Abbreviation: standard
Products: Model types Others Tube manufacturer

Standard Telephones and Cables Limited
Radio Merchandise Dept., St. Chads Place, 364 Grays Inn Road, London WC1 (ca. 1933)
Registered Offices: Columbia House, London WC2 (1930)
Rectifier Division, Warwick Road, Boreham Wood, Herts (1949)
Factories in Foots Cray, New Southgate, Hendon, North Woolwich and others.

STC manufactured tube/valves, and later semiconductors, magnetic materials (Permalloy tapes), radio receivers and communication devices.

Brand names for valves/tubes are: Standard, Micromesh (1932-1933) and Brimar (1934-1960).

Founded: 1925
Closed: 1991

In May 1883, Western Electric (USA) opened a small office and store in London. The business continued to grow and in 1910 they formed the private company Western Electric Co. When the International Telephone and Telegraph Company (ITT) aquired the international operations of Western Electric in September 1925, the company was renamed to Standard Telephones and Cables Ltd. (STC).

In 1938, Kolster-Brandes became part of STC.

Standard Telecommunication Laboratories Ltd. (STL, also used by STC Technology Limited) was established in 1945 in an existing plastics and cable factory in Progress Way, Enfield and later moved to Harlow, Essex. They deleveloped a double beam oscilloscope, wideband microwave link systems, telephone switching and telegraph applications, and semiconductors.

After a failed attempt at entering the Mainframe business with the takeover of ICL, and with dropping sales in the telecommunications sector, the company was aqcuired by Nortel in 1991.

STC first uses the brand Standard for their valves. From 1932 to 1933 the valves are marketed under the brand Micomesh, and after 1933 the brand Brimar (British made, American ratings) is used. The manufacturing plant was at Foots Cray in Kent.

Valves/tubes were continued to be advertised by STC. In 1949, the brand SenTerCel for selenium rectifiers was used.

The Brimar valve and cathode-ray tube division was sold to Thorn Electrical Industries Ltd. in 1960. For more details, see page 4 of "History of the British Radio Valve to 1940" by Keith R. Thrower, 1992 [570]

Some models:
Country Year Name 1st Tube Notes
GB  38 Microphone Type 4017-C   A moving coil microphone in a cylindrical metal casing with three screw terminals on the b... 
GB  31 Microphone Type 4017-A   A dynamic microphone used on Radio Suisse Romande from 1940 for reports. Microphone dyn... 
GB  38 Oscillator 74330B L63  Oscillator which appears to be able to generate frequencies from 300 to 2800 Hz in 12 stag... 
GB  65 Trimphone 712/722 BC108B  The name Trimphone stands for Tone Ring Illuminated Model Phone. The name was retained aft... 
GB  35 Universal Wavemeter R502 HL2  Wide range (100 kHz - 48 MHz or 87 MHz) absorption wavemeter supplied in a wooden carrying... 
GB  51 FM radio altimeter STR30 8D3  The Type STR30 is an S band (7 cm) FM radio altimeter that was developed by the Radio Divi... 
GB  35 Portable Resistance Capacity Bridge SR1185   Outer case is made of sheet copper, face plate is aluminium. 9 volt grid bias battery fou... 
GB  33 Standard 30MC PM12A  3 Valve Battery Receiver with Moving Coil Loud speaker HT1 80 volts, HT2 100 volts, G... 
GB  32 3 Valve Band Pass Receiver S330 MM4V  Unknown tube: AC2/HL is AC2HL 
GB  32 2 Valve Battery Receiver S328 PM1HL  HT1 108 volts LT 2 volts Automatic grid Bias 
GB  33 Standard 30B PM12A  3 Valve Battery Receiver  HT1 80 volts, HT2 100 volts, GB1 1.5 volts GB2 3 to 4... 
GB  64 Milliwatt Test Set 74166B 101-LXU-17B   RF level calibration set for 1 milliwat at 75 ohms. RF input has 75 ohm resistor and therm... 


Further details for this manufacturer by the members (rmfiorg):

"Standard" logo from Standard 30MC User Instructions Nov 1933tbn_stc_logo_1933.jpg
ca. 1955tbn_gb_stc_address.jpg