RADIO PROPAGATION 



69 



uj{lu 



0.001 0.002 



0.02 0.05 



SIN t,2 



Fig. 14 — Relative advantage of different types of ground for low-angle reception on 

 14 meters with vertical polarization. 



locating an antenna above sea water instead of above the following 

 grounds on a wave-length of 14 meters is given in Table II. 



TABLE II 



Acknowledgment 

 The value of a paper of this type depends to a large degree upon its 

 freedom from errors. With this thought in mind the equations and 

 tables have been checked by my associate, Mr. Loyd E. Hunt, whose 

 cooperation is hereby acknowledged. 



