| 摘要 |
<p>A radio FM receiver is provided with a voltage-controlled oscillator which can be connected via a frequency 2-divider to a quadrature combination circuit for transforming down the frequencies of received radio signals and for supplying quadrature output signals. The receiver is further provided with detection and sound reproduction means connected to this combination circuit. A frequency 3-divider is also present, by means of which the oscillator can be connected to the combination circuit, as well as switching means for connecting the mixer element to the oscillator either through the 2-divider or through the 3-divider.</p> |
