This variable frequency (VFO) oscillator was found in a Japanese publication of 1962. Coil details (in Japanese, but can be deduced) are next to the diagram covering the 3.5 MHz band.
September 2016 - It can be purchased from Mouser Electronics the new rectification controllers...
This 3-digit code switch was obtained from an old American documentation. The capacitor is 470 uF...
This small fluorescent lamp inverter (up to 20 W) can be powered by 12 V battery and even less. The...