THE BELL SYSTEM 



TECHNICAL JOURNAL 



VOLUME XXIII, 1944 



Table of Contents 



January, 1944 



The Discernibility of Changes in Program Band Width — D. K. Gannett 



and Iden Kerney 1 



Use of the Etch Technique for Determining Orientation and Twiiming 



in Quartz Crystals— G. W. Willard 11 



Modes of Motion in Quartz Crystals, the Effects of Coupling and Meth- 

 ods of Design — R. A . Sykes ^2 



Response of a Linear Rectifier to Signal and Noise — W . R. Bennett 97 



Dielectric Constants and Power Factors at Centimeter Wave-Lengths — 



Carl R. Englund 1 14 



April, 1944 



Indicial Response of Telephone Receivers — E. E. Mott 135 



Theoretical Analysis of Modes of Vibration for Isotropic Rectangular 



Plates Having All Surfaces Free — H. J. McSkimin 151 



Principles of Mounting Quartz Plates — R. A. Sykes 178 



The Magnetically Focused Radial Beam Vacuum Tube — A. M. 



Skellett 190 



July, 1944 



Effect of Telegraph Distortion on the Margins of Operation of Start- 

 Stop Receivers — W . T. Rea 207 



The Mounting and Fabrication of Plated Quartz Crystal Units — R. M. 



C. Greenidge 234 



Effects of Manufacturing Deviations on Crystal Units for Filters — 

 .4. R. D'keedene 260 



Mathematical Analysis of Random Noise — S. 0. Rice 282 



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