This transmitter for the 40 meter or 7 MHz band was found in a magazine 73 for radio amateurs of the 90s. The circuit has a power of ½ W.
We found this circuit in Popular Electronics from January/February 1969. The circuit must be...
With the development and availability of small LCD screens for automotive use, especially in...
Taking advantage of the two stable states of a tunnel diode it is possible to build a switching circuit...