We found this circuit in American documentation from the 1980s. Transistors can be of general use. The frequency range of the generated signals ranges from 500 kHz to 10 MHz.
This experimental good sensibility radio was obtained from a 1968 magazine. The magazine no longer...
This circuit was obtained from an 80's Radio Electronics. The circuit decodes “scrambled” or...
This simple amplifier uses a microphone attached to the telephone. The 3-transistor circuit was...