This circuit is from 1999 documentation. However, it can still be easily assembled, as all components used are common. The sensors can have their quantity increased, being connected in parallel.
The original frequency of the Pierce Oscillator with bipolar transistor is given by the crystal, which...
AEM's FM12 (QPL) series components are included in the latest edition of the European Space...
This space mark demodulator for FSK signals was found in an American telecommunication...