Automatic gain control means for a single sideband radio receive

Details Automatic gain control means for a single sideband radio receive Automatic gain control means for a single sideband radio receive

1975-10-22

1977-03-22

Griffin, Robert L.

325404, 325405, 325409, 325410, H04B 116

Patent

active

040139646

ABSTRACT:
An audio derived AGC signal for controlling RF and/or IF amplifiers in the radio receiver wherein a first control signal is developed by a circuit having a relatively slow response time when the audio output signal is below a predetermined value and a second control signal is developed by a circuit having a relatively fast response time when the audio output signal is at or above the predetermined value. The control signals are developed across a storage capacitor and a circuit is connected thereto for quickly discharging the capacitor when no signal is being supplied from the audio circuit.

REFERENCES:
patent: 2245353 (1941-06-01), Morlock
patent: 2472301 (1949-06-01), Koch
patent: 2556070 (1951-06-01), De Groot et al.
patent: 2957074 (1960-10-01), Trevor
patent: 3116453 (1963-12-01), Lennon et al.
patent: 3154740 (1964-10-01), Eness
patent: 3199044 (1965-08-01), Morris
patent: 3450834 (1969-06-01), De Marinis et al.

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