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On Mon, 15 Feb 2010 16:25:12 -0500, Michael Coslo
wrote: Is this the ultimate waaayyy off center dipole? I'm assuming the feedline radiates a LOT. Hi Mike, For one, as we understand a Zepp, it is very long in relation to wavelength. This means at some frequency it is a Hi Z resonance we are feeding and hence a very small current. As current is generally regarded as the indicator of radiation, any pigtail (that portion of the remaining off-center) would barely contribute at all. However, for what we understand to be a Zepp, there is no pigtail; except, perhaps, the transmitter itself as the Zepp is classically fed from the antenna connector (or the plate tank). This, of course, gives rise to RF being in the shack and all the concomittant problems that follow from that. (How in the world did they ever come to this design in a hydrogen filled balloon? Such is the anachronism of naming conventions, actual dimensions, history, and the Hindenburg.) To return to your question, yes, the Zepp is the degenerate form of an OCF dipole. 73's Richard Clark, KB7QHC |
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