Radio channel squelching systems
Radio frequency amplifier with gain control
Radio receiver with a received input level monitoring circuit
Radio receiver with automatic control of attenuation for...
Radio-frequency variable attenuator
Radiometer gain control
Receiver alarm system
Receiver for pulse modulated signals
Receiver, automatic gain controller suitable for the...
Reception automatic gain control system and method
Recording and playback control system
Rf amplifier bias control method and apparatus
Rf power amplifier control system
Rf power-control circuit