562 



BELL SYSTEM TECHNICAL JOURNAL 



TABLE 5 

 New York-Charlotte Type K Carrier Noise Computations 



Estimated 

 57 kc 



Section Cable i-pss Noise 



Level 2 

 at Rept. 

 Output 



New York- New York KS 



New York KS- Princeton KN 



Princeton KN-Princeton 



Princeton-Princeton KS 



Princeton KS-Philadelphia KN 



Philadelphia KN-Philadelphia 



Philadelphia-Philadelphia KS 



Philadelphia KS-Elkton KN 



Elkton KN-Elkton 



Elkton-Elkton KS 



Elkton KS-Baltimore KN 



Baltimore KN-Baltiniore 



Baltimore- Washington KN 



Washington KN-Washington 



Washington-Washington KS 



Washington KS-Fredericksburg KN 

 Fredericksburg KN-Fredericksburg . 

 Fredericksburg-Fredericksburg KS . 

 Fredericksburg KS-Richmond KN . 



Richmond KN-Richmond 



Richmond-Richmond KS 



Richmond KS-McKenney KN 



McKenney KN-McKenney 



McKenney-McKenney KS 



McKenney KS-Norlina KN 



Norlina KN-Norlina 



Norlina-Norlina KS 



Norlina KS-Durham KN 



Durham KN-Durham 



Durham-Durham KS 



Durham KS-Greensboro KN 



Greensboro KN-Greensboro 



Greensboro-Greensboro KS 



Greensboro KS-Salisbury KN 



Salisbury KN-Salisbury 



Salisbury-Salisbury KS 



Salisbury KS-Charlotte KN 



Charlotte KN-Charlotte 



New York-Charlotte Totals 



- 8.91 



- 9.71 

 + 1.10 

 -13.29 

 -10.75 



- 2.19 

 -10.07 



- 9.38 

 -f 8.57 



- 2.03 



- 3.49 



- 3.42 

 + 2.97 

 -f 4.25 



5.93 

 6.69 

 2.95 

 6.24 

 5.94 

 5.03 

 1.15 

 8.54 



- 1.51 

 + 14.08 



- 2.59 

 + 3.89 

 -I- 3.66 

 + 13.12 

 + 3.87 

 + 18.51 

 + 4.09 

 + 12.18 

 + 3.20 

 + 12.06 



- 2.53 

 + 1.2 



- 4.09 



- 8.35 



+ 23.273 



1 Attenuation figures used: 3.76 for U.G. at 73° and 3.94 for Aerial at 110°. 

 ^ For top channel, referred to — 9 db switchboard level. 

 3 Computed on a root-sum-square basis. 



sections adjacent to New York and Philadelphia are short and it was 

 decided, therefore, to omit regulation from the two auxiliary stations 

 between New York and Princeton, N. J., two between Princeton and 

 Philadelphia, andfone between Philadelphia and Wilmington, Del. 



