Electronically tuned oscillator

Claim 1

A MICROWAVE SOURCE COMPRISING, IN COMBINATION: (A) AN ELECTRICALLY CONDUCTIVE OPEN ENDED HOUSING, SAID HOUSING INCLUDING (1) A PAIR OF SIDE WALLS AND ONE END WALL, AND (2) A PARTITION DISPOSED PERPENDICULARLY TO SAID SIDE WALLS AND SAID ONE END WALL FOR DIVIDING THE INTERIOR OF SAID HOUSING INTO FIRST AND SECOND SUBSTANTIALLY EQUAL RESONANT CAVITIES, (B) A HIGH FREQUENCY TRIODE RIGIDLY MOUNTED IN AN APERTURE IN SAID PARTITION, SAID TRIODE HAVING (1) AN ANODE TERMINAL DISPOSED IN SAID FIRST RESONANT CAVITY, (2) A CATHODE TERMINAL DISPOSED IN SAID SECOND RESONANT CAVITY, AND (3) A GRID TERMINAL ELECTRICALLY COUPLED TO SAID HOUSING (C) AN ANODE LINE DISPOSED IN SAID FIRST RESONANT CAVITY, SAID ANODE LINE HAVING (1) ONE END ADAPTED TO SUPPORT A CONTACT MEMBER IN ELECTRICAL CONTACTING ENGAGEMENT WITH SAID ANODE TERMINAL, AND (2) ITS OTHER END RIGIDLY MOUNTED IN A SUPPORT MEMBER DISPOSED IN THE OPEN END OF SAID FIRST RESONANT CAVITY, (D) A CATHODE LINE DISPOSED IN SAID SECOND RESONANT CAVITY, SAID CATHODE LINE HAVING (1) ONE END ADAPTED TO SUPPORT A CONTACT MEMBER IN ELECTRICAL CONTACTING ENGAGEMENT WITH SAID CATHODE TERMINAL AND (2) ITS OTHER END RIGIDLY MOUNTED IN A SUPPORT MEMBER DISPOSED IN THE OPEN END OF SAID SECOND RESONANT CAVITY, (E) FEEDBACK MEANS FOR COUPLING ELECTROMAGNETIC ENERGY FROM SAID FIRST RESONANT CAVITY TO SAID SECOND RESONANT CAVITY THROUGH SAID PARTITION, SAID FEEDBACK MEANS INCLUDING (1) MEANS FORMING AN APERTURE IN SAID PARTITION AND (2) A FEEDBACK SCREW IN THREADED ENGAGEMENT WITH SAID CATHODE LINE, SAID FEEDBACK SCREW EXTENDING THROUGH SAID APERTURE AND HAVING AN ENLARGED END PORTION DISPOSED IN SAID FIRST RESONANT CAVITY, (F) OUTPUT MEANS FOR EXTRACTING ELECTROMAGNETIC ENERGY FROM SAID FIRST RESONANT CAVITY, AND (G) TUNING MEANS DISPOSED IN SAID FIRST RESONANT CAVITY FOR VARYING THE RESONANT FREQUENCY THEREOF.