This circuit was found in an American documentation from 1975. The components of the time can no longer be found easily, but they can be tested equivalent.
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...