On Tue, 26 May 2009 18:06:03 -0400, Guy Olinger, K2AV wrote:

>Probably the same as as a 50 watt light bulb, 

This seems wildly pessimistic. I'd guess no more than a dB or so of 
dissipation. A typical dipole near resonance looks like about 70 
ohms, nearly all of which is a resistance that represents RADIATED 
power, with the rest being wire resistance. So lets say that some of 
that power causes current flow in nearby conductive objects. That 
current will be small unless those objects are near resonance, and 
whatever the current, it will cause more re-radiation than 
dissipation, because those objects have radiation resistance too. 

73,

Jim K9YC


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