460 BELL SYSTEM TECHNICAL JOURNAL 



the length of tlie circuit in wavelengths, X, and C " 



d = 0.0183 ^ (15) 



I 



A7.9 The Initial Loss .4 



The quantity A of (2) is plotted vs. d in Fig. 9.3. This plot assumes 

 QC — 0, and may be somewhat in error. Perhaps Fig. 9.4 can be used in 

 estimating a correction; it looks as if the initial loss should be less with 

 QC 9^ even when <i ?^ 0. In any event, an error in .4 means only a few db, 

 and is hkely to make less error in the computed gain than does an error in 

 B, for instance. 



