AERONAUTICAL FACSIMILE - OVER THE OCEANS BY SATELLITE

Air travellers expect to become completely incommunicado the moment th ey set foot aboard an aircraft, especially on transoceanic flights. Th e latest signal processing technology, and new designs of microwave am plifiers and avionic aerials, mean that being high above the clouds is no excuse for not sending that facsimile on time. This paper describe s how facsimile and speechband data transmission has been added to the potential capability of BT's world-beating Skyphone(TM) speech coder that is already in service with four international airlines.