Aircraft Radio Equipment for Use on European Air Lines

The apparatus to be described has been developed to provide a transmitting and receiving equipment for small and medium commercial and private aircraft which will be extremely simple to operate and as foolproof as possible. Many features are introduced which, although they have been in use for broadcast and other commercial radio apparatus, have not been applied to aircraft radio equipments. For example, an electrical remote tuning system is used for the receiver, and automatic volume control on both telephony and telegraphy is provided. The equipment provides a telephonic range of 180-200 miles, and a telegraphic range of 350-400 miles, and weighs only sixty pounds complete.