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Aviation History
1954
1954 - 0158.PDF
22 FLIGHT 15 JANUARY 1954 The Ideal ReceiW gjjgSBBBBBffi^* A Fixed Frequency, Single Channel Receiver 4 covering 2 to 20 Mc/s. The crystal-controlled R.93 is an important receiver which has been designed to operate over long periods under either temperate, arctic or tropical conditions at unattended sites. A number of R.93's may be stacked in standard 19" racks for multi channel working on R.T. or W.T. Double or triple diversity racks can also be supplied with suitable terminal equipment for direct teleprinter operation from frequency shift transmission. Enquiries will receive immediate attention REDIFON LIMITED RADIO COMMUNICATIONS DIVISION BROOMHILL ROAD LONDON, S.W.I8 'Phone: VANDYKE 7281 //•'//////// DESIGNERS AND MANUFACTURERS OF RADIO COMMUNICATIONS AND INDUSTRIAL ELECTRONIC EQUIPMENT Full Bore The bore of the Saunders S.P. Cock, whether it be in the 4 in. model or any size down to the £ in. is of full pipeline equivalent. The bore is clean and without gaps that spoil flow efficiency. This one feature of the Spherical Plug Cock commends it for every fluid-handling duty aboard aircraft:—for fuels and oils, de-icing and hydraulic systems, for cabin heating air and for oxygen and nitrogen control. Full bore coupled with the reverse charac teristic of perfect sealing against all internal and external leakage renders the S.P. Cock without rival for the essentials of speedy fuelling and hazard elimination. 1" 8 Bore SAUNDERS VALVE J ^SfciffifeiS^^ COMPANY LIMITED BLACKFRIARS STREET Aircraft Division HEREFORD • Head Office: CWMBRAN, MONMOUTHSHIRE
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