Arrangements for ensuring tracking with variable inductors

Continuous tuning > of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range > Arrangements for ensuring tracking with variable inductors

Continuous tuning (H03J7/00, H03J9/00 take precedence; combination of continuous and discontinuous tuning other than for bandspreading H03J5/00) > of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range > Arrangements for ensuring tracking with variable inductors