Suggested by Motorola in 1968 documentation, this circuit has an efficiency of 70%. Power transistors are types of the time as are transformers.
We found this oscillator in a documentation for radio amateurs from the 1970s. The circuit can use...
Many oscilloscopes have high impedance inputs that make it difficult to observe high frequency signals...
This is the receiver for the previous circuit we found in the December 1992 Radio Electronics...