On the Calculation of the Inductances and Capacities for a Multi-Range or Other Consecutive Series of Tuned Transmitting or Receiving Circuits, the Total Range and Accuracy Required Being Given

It is often necessary to use a series of consecutive tunablr circuits to cover a large range of wave lengths or frequencies. The papee describes a method of determining the constants of each circuit when the total wave length range and the accuracy of setting required in each intermediate range are given. Overlap between successive scales is provided for, and a method is indicated by which further conditions, such for instance as a limiting value of the damping of each circuit, may be introduced. The paper thus reduces the calculations of such circuits from an empirical problem to a straightforward engineering proposition.