Topband: "T" or Inverted L?

k8do k8do@email.msn.com
Sat, 20 Jan 2001 11:53:37 -0500


Well John...
>From your question, you are limited in the vertical and horizontal
dimensions available... I would not get my calculator overheated trying to
assemble a designer antenna knowing that the antenna will be too short to
resonate whatever I do...
I would simply put up  the 60 feet vertically with the longest (symmetrical)
Tee top I can manage with the available supports.. Then I would measure the
resonant frequency and add inductance until it resonates at the frequency of
interest... And, 'voila', operate!...

To answer your (at least try) questions:  The Tee actually does radiate,
except the field from each half is out of phase and effectively cancels the
horizontal components... The Tee is likely to be a more effective DX
antenna... The L may be better for ragchewing and local work because of the
horizontal leakage...
The length of the vertical should be maximized in either the T or L
configuration and it does not make or break  the decision as to
configuration...
Denny  K8DO



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