496 



BELL SYSTEM TECHNICAL JOURNAL 



Monthly Averages of Diurnal Variation of Signal Field Strength 



Rocky Point, L. 1., U. S. A. (2XS) Measured at New Southgate, England 



Corrected to 300 Amperes Antenna Current 



5.480 Km. 57,000 Cycles 



Jan., 1923— Dec, 1924 



.Mdiitlily Averages Diurnal Variation of Signal Field Strength 



l.eafield, England (<".RL) Measured at Belfast, Maine 



Corrected to 300 Amperes Antenna Current 



1924 



24,050 Cycles 



