This amplifier for the 10 m (30 MHz) band has a gain of 12 to 15 dB having been found in an American documentation. Other RF transistors can be used like 2N2222 or 2N2218.
This circuit was found in documentation from the 90s, being indicated for use with tape recorders given...
The traditional circuit was taken from a French magazine Radio Plans that no longer exists but can...
This is an improved version of the previous circuit that includes speed control. The engine can be...