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PC Paintbrush Image  |  1994-06-26  |  50KB  |  640x480  |  4-bit (4 colors)
Labels: text | screenshot | diagram | sketch
OCR: ANTENNA V ANTENNA RADIO POMER FREQUENCY INTERMEDIATE MIXER MULTIPLIER AMPLIFIER FILTER FREQUENCY MULTIPLIER AMPLIFIER AMPLIFIER FREQUENCY AUDIO CLIPPER CRYSTAL DISCRIMINATOR AMPLIFIER AMPLIFIER FILTER OSCILLATOR MICROPHONE A. A double-conversion receiver B. A variable-frequency oscillator A. A band-pass filter C. A superheterodyne receiver B. A crystal oscillator D. An FM receiver FIGURE 17-3 C. A reactance modulator FIGURE 17-4 D. A rectifier modulator