RF or even switching transistors like the 2N2222 can be used in this circuit. The capacitors are ceramic and the frequency is determined by the crystal.
This circuit has a voltage gain of 30 times and passband of 14 MHz. The circuit is from the 1974...
This transmitter has a reasonable range despite operating in the 530 to 1600 kHz range. The...
This circuit was found in Radio Electronics magazine from September 1959. The circuit emits a loud...