654 



BELL SYSTFM TECHNICAL JOURNAL 



30 



26 



i- 



z 



111 



U 24 



a. 



a 



? 22 



'^|Ql 20 



0.5 t.O 1.5 2.0 2.5 3.0 3.5 4.0 



EFFECTIVE DRIFT ANGLE, F N, IN CYCLES PER SECOND 



Fig. 134.— Efliciency vs elTective drift angle for several degrees of resonator loss. 



