596 



BELL SYSTEM TECHNICAL JOURNAL 



values of audio phase angle while the degree of modulation of the car- 

 riers is fixed and equal and the field strength ratio is given a diliferent 



22 



-6 



-8 



-22 



-18 



-20 ^ 



30 



180 



Fig. 



60 90 120 150 



r RADIO PHASE ANGLE IN DEGREES 



13 — Same as for Fig. 12 except that the field strength ratio EilEi — 0.707. 



30 



60 90 120 



y RADIO PHASE ANGLE IN DEGREES 



150 



180 



Fig. 14 — Same as for Fig. 12 except that the field strength ratio £1/^2 = 0.5. 



value in each successive figure. Here the marked increase in the 

 amount of distortion present as the audio components depart from 

 synchronism and the carriers approach phase opposition is most strik- 



