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Old April 10th 04, 11:15 PM
Richard Clark
 
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On 10 Apr 2004 18:25:04 GMT, PAMNO (N2EY) wrote:
All of this supports both your experiences and those of others. If the exact
characteristics of tubular Twin Lead are important to the design, it's no
wonder that the reported results cannot be obtained.

One more point. The SWR graphs shown for the 5 band version show quite narrow
SWR bandwidths. If anyone is interested I can report them in a future post.


Hi Jim,

I stand corrected on the tubular twin lead (must've died in the
mid-60s then).

It offers nothing substantially different to the physics of design
however, just a different velocity factor which is scalable to suit
any implementation.

However, my data to this point confounds the "theory" of it all by
exhibiting stubs that do NOT resonate at their computed length
(complete with correction for ANY velocity factor commonly observed).

More data is always appreciated.

73's
Richard Clark, KB7QHC