Booster for preamplifier (CB6290E)

We found this circuit in a 1968 Electronics World. The circuit uses a transistor of the time providing a 16 dB signal gain with a 4 V output.

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Regulator with Reference Voltage (CB19409E)
The reference voltage determines the output voltage on this circuit which has a maximum current of 5 A....
80-meter Range Transceiver (CB17062E)
We found this circuit in a 1995 documentation. It operates in the 3.5 MHz band that corresponds to the 80...
Neon flahser with SIDAC (CB4244E)
This circuit using a SIDAC as a relaxation oscillator was found in the ON Semiconductor manual for...