Well, maybe the late hour contributed to MY mix up of Zenith (overhead) and 
Azimuth, horizon, etc. Thanks for the nice piece anyway Richard! 
 
"Jack Painter"  wrote in message 
news:TSBwb.14594$yM6.11303@lakeread06... 
 Richard wrote: 
  In my experience, the vertical angle of maximum radiation, in general, 
  decreases with antenna height above the earth, when the height of the 
  antenna in is not over 5/8 wavelength. 
 
 That's a good paraphrase of the standard writings on the subject, but.. 
 
 Richard also wrote: 
  A 1/2-wave horizontal dipole erected 1/4-wave over good earth has its 
  maximum radiation toward the zenith. The same antenna elevated to 
  1/2-wave above the earth has a take-off angle near 30 degrees above the 
  horizon. 
 
 Please explain this (apparent) contradiction? I expended significant 
effort 
 to get a dipole 1/2 wavelength above ground, and did so specifically for 
 long-haul communications. I may have missed any theory about the 1/4 
 wavelength being the optimal height, as I was always told (as I read) that 
 1/2 wavelength height was considered optimal for a number of reasons, not 
 the least of which was the best take-off angle. 
 
 Thanks, 
 
 Jack Painter 
 NF05CM 
 Oceana Radio 
 
 
 
 
		 
		
		
		
		
		
		
		
		
	
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