sentences:  The oscillator's stability is due largely to the dependency of the tube's (or transistor's) forward transconductance on the resonant frequency () of the tuned circuit.Specifically, Vackář found that forward transconductance varied as for the Clapp oscillator, as for the Seiler oscillator, and as for his design, where the factor of the coil () increases with .The conditions for a forward tranconductance that varies minimally with respect to "ω" are met when