This powerful transmitter for the 27 MHz band was found in a Japanese publication from 1961. The circuit is powered by battery and has the details of the coils given next to the diagram.
This circuit delivers at its output a voltage that proportional to the amplitude of the input...
This circuit generates signals with opposite phases determined by C1 and adjusted by R2. The...
In the diagram from the November 1999 Electronics Now magazine we have the way to improve both the...