484 



BELL SYSTEM TECHNICAL JOURNAL 



weather conditions of the open-wire Hne. Details of the process of 

 arriving at some of these requirements, also measurements and per- 

 formance of the complete television circuit, have been given in a 

 previous number of this Journal}" 



Loyv-Frequency Dislortion Correcting Network 



High-Freqwerbcy dtienuaiiorv Ecru/allrer 

 ^AA^v^ <0D^rb Hk 



Ri'Cr 





-<nJo^ 



-o4VVVo- 



C7 



High-Fre(^uency Phase Corrector 



Fig. 16 — Distortion correcting networks for television circuit. (Dry weather.) 



Since the general circuit arrangement is here the same as in the 

 previous problem, formula (69) is directly applicable. The transfer 

 exponents, a -f ib, were calculated from it for two weather conditions 

 of the open-wire line, called dry weather and average-wet weather. 



15 "Wire Transmission System for Television," D. K. Gannett and E. I. Green, 

 B. S. T. J., October, 1927, pp. 616-632. See also "The Production and Utilization 

 of Television Signals," Frank Gray, J. W. Horton, and R. C. Mathes, pp. 560-603. 

 Three other papers on Television by H. ¥.. Ives, by H. M. Stoller and E. R. Morton, 

 and by E. L. Nelson are given in the same number of the Journal. 



