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Updated: June 14, 2025
The result is that these oscillations of different frequencies interfere and reinforce each other when beats are produced, the period of which is slow enough to be heard in the headphones, hence the incoming signals can be heard only when waves from the sending station are being received. The Autodyne or Self-Heterodyne Long-Wave Receiving Set.
From this you will see that any regenerative set can be used for autodyne, or self-heterodyne, reception. The Separate Heterodyne Receiving Set. The better way, however, is to use a separate vacuum tube for setting up the heterodyne oscillations. The latter then act on the oscillations that are produced by the incoming waves and which energize the grid of the detector tube.
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