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Հարց 328

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

  1. Mixer
  2. Reactance modulator
  3. Balanced converter
  4. MultiplierՃիշտ պատասխան

Բացատրություն

A multiplier is biased to produce a strong harmonic of its input and its output tank is tuned to that harmonic, which is how a lower-frequency oscillator reaches VHF. A mixer would require a second input signal, which is not present here.

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Հարց 328: What is the stage in a VHF FM transmitter that generates a… · FCC General Class (Element 3) · Questena