crystal heterodyne

См. также в других словарях:

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• Hallicrafters SX-117 — The Hallicrafters SX 117 is a multiband AM receiver. It is capable of receiving AM (Amplitude Modulation), CW ( Morse code), USB, LSB (Sideband). With plenty bells and whistles, especially for its time. A nice thing it has is an “LF Antenna”… …   Wikipedia