140 BELL SYSTEM TECHNICAL JOURNAL 



vestment for generating modulated radio-frequency power and that 



for radiating it. 



References 



Ralph Bown, Carl R. Englund, and H. T. Frus. Radio Transmission Measure- 

 ments. Proc. I. R. E., 11, 115; April, 1923. 



D. G. Little. KDKA Telephone Broadcasting Station of the Westinghouse Elec- 

 tric and Manufacturing Co., East Pittsburgh, Penna. Proc. I. R. E., 12, 

 255; June, 1924. 



Ralph Bown .\nd G. D. Gillett. Distribution of Radio Waves from Broadcasting 

 Stations over City Districts. Proc. I. R. E., 12, 395; August, 1924. 



Edward L. Nelson. Transmitting Equipment for Radio Telephone Broadcasting. 

 Proc. I. R. E., 12, 553; October, 1924. 



Julius Weinberger. Broadcast Transmitting Stations of the Radio Corporation 

 of America. Proc. I. R. E., 12, 745; December, 1924. 



Ralph Bown, DeLoss K. Martin, and R.\lph K. Potter. Some Studies in Radio 

 Broadcast Transmission. Proc. I. R. E., 14, 57; February, 1926. 



Alfred N. Goldsmith. Reduction of Interference in Broadcast Reception. Proc. 

 I. R. E., 14, 575; October, 1926. 



Lloyd Espenschied. Radio Broadcast Coverage in City Areas. Bell Syst. Tech. 

 Jour., VI, 117; January, 1927. 



D. K. Martin, G. D. Gillett, and I. S. Bemis. Some Possibilities and Limita- 

 tions in Common Frequency Broadcasting. Proc. I. R. E., 15, 213; March, 

 1927. 



Knox McIlw.vin .\nd W. S. Thompson. A Radio Field Strength Survey of Phila- 

 delphia. Proc. I. R. E., 16, 181; February, 1928. 



I. F. Byrnes. Recent Developments of Low Power and Broadcasting Trans- 

 mitters. Proc. I. R. E., 16, 614; May, 1928. 



P. P. EcKERSLEY. The Design and Distribution of Wireless Broadcasting Stations 

 for a National Service. Proc. Wireless Section, I. E. E., 3, 108; June, 1928. 



H. M. O'Neill. Characteristics of Certain Broadcasting Antennas at the South 

 Schenectady Development Station. Proc. I. R. E., 16, 872; July, 1928. 



S. W. Edwards and J. E. Brown. The Use of Radio Field Intensities as a Means 

 of Rating the Outputs of Radio Transmitters. Proc. I. R. E., 16, 1173; 

 September, 1928. 



C. M. Jansky, Jr. Some Studies of Radio Broadcast Coverage in the Middle 

 West. Proc. I. R. E., 16, 1356; October, 1928. 



