The wire descending from the antenna goes to the parallel LC resonant circuit consisting of a coil and a variable capacitor, CV. Together they tune in to the desired frequency.

the output is fed into a parallel LC tank circuit. A capacitive voltage divider is used to provide feedback. The cap C3 between the LC dircuit and the base, effectively passes the AC feedback signal ...

A parallel-LCoscillator tolerates clipping of the signal,but this series-LC circuit degeneratesinto a multivibrator if you allowthe signal to grow so large that it clips.The AGC servo action has the ...

If LC circuits aren’t for you and you have plenty of RF power to play with, there is of course another way to preserve impedance matching, and it’s one in which you’ll never have to tweak a ...