View Single Post
  #6   Report Post  
Old April 15th 04, 07:58 PM
Cecil Moore
 
Posts: n/a
Default

JLB wrote:
"Cecil Moore" wrote:
He is losing at least half his power in the resistors.
Wouldn't you rather radiate that power? I go to great
lengths to obtain an extra 1 dB.

If I remember my traveling wave antenna theory, he wouldn't necessarily be
loosing 3 dB in the resistors. At higher frequencies more of the power
radiates before it gets to the loads, does it not?


Yes, "more" but not near 100%. A multi-wavelength terminated rhombic
loses its reverse radiated lobes and along with them, quite a bit
of power. Even on 10m, 110 ft. is only 3 wavelengths long. Averaged
over all of HF, I'll bet that antenna loses close to half of its power
in the resistors, assuming all reflections have been eliminated by
the resistors.
--
73, Cecil http://www.qsl.net/w5dxp