Rca1948FrequencyModu.. - The New Jersey Antique Radio Club

DUPLEX SOUND AND FACSIMILE 407the order of 1000 or 2000 cycles.as a and the 17,000-cycle tone as b,If we designate the 4000-cycle tonethe resultant tones up to the fifthorder, would be b — a, b — 2a, b — 3a, b — 4a, or 13,000 cycles, 9000cycles, 5000 cycles and 1000 cycles respectively. The amplitude ofthese resultant frequencies was measured in the output of the receiverwith the two tones modulating the signal generator.In the second test, shown in Table II, the 4000-cycle tone had aconstant deviation of 60 kc and the deviation of the 17,000-cycle tonewas varied from 5 to 15 kc. The amplitude of 4000-cycle output wastaken as 100 per cent.Table II4000 cycles; constant deviation, 60 kc17,000-cycleDeviation