![Practical wireless telegraphy; a complete text book for students of radio communication . The functioning of the heterodyne* re-ceiver is based upon the interaction of alternating currents of two frequencies insome Practical wireless telegraphy; a complete text book for students of radio communication . The functioning of the heterodyne* re-ceiver is based upon the interaction of alternating currents of two frequencies insome](https://c8.alamy.com/comp/2CRK1W2/practical-wireless-telegraphy-a-complete-text-book-for-students-of-radio-communication-the-functioning-of-the-heterodyne-re-ceiver-is-based-upon-the-interaction-of-alternating-currents-of-two-frequencies-insome-part-of-the-receiver-circuits-for-example-if-an-alternating-current-of-50000-cycles-per-second-flows-through-a-givencircuit-and-there-is-superposed-on-it-another-current-having-frequency-of-49000-cycles-persecond-a-beat-current-will-result-having-a-frequency-equal-to-the-numerical-differenceof-the-two-applied-frequencies-or-1000-cycles-per-second-the-same-frequency-would-b-2CRK1W2.jpg)
Practical wireless telegraphy; a complete text book for students of radio communication . The functioning of the heterodyne* re-ceiver is based upon the interaction of alternating currents of two frequencies insome
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Lot - A VINTAGE TELEFUNKEN OPUS SEVEN TUBE SUPER HETERODYNE HI FI SYSTEM RADIO RECEIVER, WEST GERMAN, 1950s,
![Schematic of the heterodyne spectrometer principle. The radio-frequency... | Download Scientific Diagram Schematic of the heterodyne spectrometer principle. The radio-frequency... | Download Scientific Diagram](https://www.researchgate.net/publication/361836290/figure/fig1/AS:1175442925060105@1657258840710/Schematic-of-the-heterodyne-spectrometer-principle-The-radio-frequency-signal-RF.png)
Schematic of the heterodyne spectrometer principle. The radio-frequency... | Download Scientific Diagram
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