Description
Class H03J : TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
Subclass 1/14: Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general (machine elements in general F16; coupling of knobs to shafts F16D) Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control Special arrangements for fine and coarse tuning