Title : 
Experiments on the Propagation of Ultra-Short Radio Waves
         
        
        
            Author_Institution : 
Formerly, Cambridge University, Cambridge, England. Now, Cruft Laboratory, Harvard University, Cambridge, Mass.
         
        
        
        
        
        
        
            Abstract : 
Experiments on the propagation of 41.5 and 45-megacycle waves are described. Correlations of signal variations and meteorological conditions are noted. A correlation between strong signal conditions and a low-temperature tropopause is indicated. Variations in the horizontal direction of arrival are observed.
         
        
            Keywords : 
Fading; Laboratories; Meteorology; Ocean temperature; Optical propagation; Optical pulses; Optical receivers; Optical reflection; Sea level; TV;
         
        
        
            Journal_Title : 
Proceedings of the IRE
         
        
        
        
        
            DOI : 
10.1109/JRPROC.1940.228900