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Raytheon Co
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Raytheon Manufacturing Co
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Publication date
Application filed by Raytheon Manufacturing CofiledCriticalRaytheon Manufacturing Co
Publication of ES219601A1publicationCriticalpatent/ES219601A1/en
A frequency modulation radio receiver for use in a system that requires the receiver to remain tuned to a desired signal, characterized by a variable frequency local oscillator and a scan signal generator arranged to provide a variable scan signal regularly to said local oscillator for varying the frequency thereof through a band including the desired signal, and means responsive to a rapid reduction of the energy noise content at a selected step of said receiver to interrupt the action of the scan signal generator and thereby set the frequency of the local oscillator. (Machine-translation by Google Translate, not legally binding)
ES0219601A1954-03-151955-01-18A radio-receiver for searching for signals (Machine-translation by Google Translate, not legally binding)
ExpiredES219601A1
(en)
A procedure to reduce the disturbances after the detection of two modulated signals in tone frequency (Machine-translation by Google Translate, not legally binding)
Improvements in the circuits of conversion, detection and amplification of portable type radio receptors. (Machine-translation by Google Translate, not legally binding)
Transistorized amplifier for frequency of 10.7 megacicles and 456 kilocicles for amplitude and frequency modulation receivers with detection systems for radio receivers. (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the methods for the automatic tuning of radio transmitters or receivers (Machine-translation by Google Translate, not legally binding)