Figure 18. L2 Details. After First 24 Turns, Add A Twisted Loop For Later Center Tap. Add 27 More Turns; Figure 19. Form 1N4001 Diode As Shown; Figure 20. 100 Ohm Temporary 3V Load Resistor Formed As Shown - NORCAL NC2030 Manual
Low power, high performance 20m or 30m dc transceiver