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Old March 23rd 04, 06:45 PM
Richard Clark
 
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On Tue, 23 Mar 2004 00:29:43 -0800, Jack Twilley
wrote:
Yes, but pursuing a match close to 1:1 and an impedance close to 50
ohms seems to be a reasonable pursuit, if I understand correctly.


Hi Jack,

This is an aspiration on par with monks seeking nirvana. The two
illustrate it is the path, not the destination that is meaningful.

There is a very clear point to be made that unless you elevate the
dipole, any 50 Ohm characteristic you observe will more ground loss
than radiation resistance. This is reasonable only in the sense of
ease of tuning and the reductio ad absurdum is bliss can be found in a
dummy load. Clipping the ends of the current structure do not lead to
increased benefit unless you shave your advantage in tenths of a dB.
To put that in perspective, unless you are a teenager, you and your
contacts couldn't possible hear any change below 1dB variation. To
force that perspective further, propagation variation through one QSO
easily varies by that much or more (unless we are talking line of
sight FM with full quieting).

73's
Richard Clark, KB7QHC
 
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