Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB11781/46A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
610,865. Frequency modulation. PHILIPS LAMPS, Ltd. April 17, 1946, No. 11781. Convention date, Nov. 26, 1941. Drawings to Specification. [Class 40 (v)] In a frequency-modulated transmitter having a variable centre frequency obtained by beating the output of an oscillator with fixed tuning with the output of a tunable oscillator, one of the oscillators being frequency modulated, the desired beat frequency is selected by a bandpass filter having tuning means ganged with the tuning control of the variable oscillator.
GB11781/46A1941-11-261946-04-17Improvements in frequency-modulated transmitters
ExpiredGB610865A
(en)
Device with a tunable oscillator, the frequency of which is automatically corrected by means of a frequency spectrum supplied by a control oscillation.