This circuit is from 1975 documentation. Transistors such as 2N3055 can be used and the transformer is of a special type. R1 is 200 ohms and R2 is 10 ohms.
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...