It is a 13.8 V x 10 A regulator obtained in a 2008 documentation. The 2N3055 transistors must be mounted in excellent heat sinks and the voltage is adjusted in the trimpot.
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...