The insertion-loss method of design is used to develop further tables of element values for the double-terminated, inductively coupled, double-tuned interstage network, with equiripple insertion-loss characteristics corresponding to minimum passband return losses of 10, 15, 20, 25 and 30dB. In each case, the lower edge of the passband is varied from 0.1 to 0.95 in increments of 0.05, with the upper edge normalised to unity.