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BELL SYSTEM TECHNICAL JOURNAL 



(c) Ratio 2:1. 



(h) Ratio 5 : 4. 



wcm 



(c) Ratio 8:1. 

 Fig. 33 — Frequency comparison. 



Fig. 34 — "Gear wheel" frequency comparison, ratio 10 : 1. 



higher frequency is an e.xact multiple of the lower. If the frequency 

 ratio is not a rational number the gear-wheel rotates, showing the 

 amount of the lack of synchronization. 



Two interesting applications to the study of radio telephony are 

 illustrated in Figs. 35 and 36. Fig. 35 shows two characteristics of a 



