610 



BELL SYSTEM TECHNICAL JOURNAL 



(X-.5)Z„ 



One 



Mid-series 



301, 



Mid-half 

 M-type 



12, 



600' 



05093 h. 



02426m. f. .02158 m.f. 



.0555611. 



n 



02728 h. 



J- .06232 h.: 

 04823 m.f. 



.03316 m.f."- 



:600' 



.014.52m.f 



2000 4000 6000 8000 (0 000 12 COO 

 Cycles per Second 



Fig. 4 — Transmission Loss of Composite Band I'ass Wave-Filter 



