Low power antenna tuner

This antenna tuner is suitable for low power consumption (less than 5 watts) transmitter or shortwave reception. 52 selects the inductor, and 52 connects the 365pF capacitor, either on the transmitter or the inductor side. This tiny tuner consists of a tapped inductor (L1) and a variable capacitor (C1) connected to the inductor via a center-off SPTD switch. The arrangement of that switch allows the capacitor to be connected to the input or output of the circuit.