Found in a 1990s American documentation, this circuit provides an output voltage approximately 4 times that of the input voltage. Diodes are general-purpose types.
The main feature of this RF oscillator that operates in the range of 100 to 800 kHz is its low...
Many people currently use the bicycle as a means of transportation and leisure in large cities....
In this radio the coil can be made with 70 + 30 turns of wire 28 to 32 in a cardboard or PVC tube...