Receiving Sets for Aircraft Beacon and Telephony

Special light-weight radio receiving sets of high sensitivity have been designed adapted for the reception on aircraft of signals from radio beacons and ground radio telephone stations. A statement of the important considerations involved in the aircraft reception of signals from Government-operated beacons and telephone stations along the civil airways in this country, such as frequency range, tuning means, volume control, vacuum tubes, amplifier characteristics, size, weight, and performance specifications, is given. Design details for three receiving sets of slightly different types, with numerous characteristic and performance curves, are discussed, with a brief discussion of the results of practical flight tests.