>In my original post on this topic, I pointed out that the
>MFJ-1792 is FULL SIZE on 40M with an isolating / loading
>coil (ON TOP) followed by a TOP HAT for a combination
>of inductive and capacitive TOP LOADING on 80M.
>The HF2V is also FULL SIZE on 40M but has inductive
>BASE loading for 80M which reduces the current in
>the element above the coil.
>It is understood by the majority of knowledable antenna users
>that end / top loading is much more efficient than inductive
>base loading for the same overall length of radiator.
// A friend experimented with different top-hats on an 8' vertical to
find out which one made the most field strength compared with no top-hat.
There was virtually no difference in field strength.
-- "I know that most men, including those who are at ease with problems
of the greatest complexity, can seldom accept even the simplest and most
obvious truth if it be such as would oblige them to admit the falsity of
conclusions which they had delighted in explaining to colleagues, which
they had proudly taught to others, and which they had woven, thread by
thread, into the fabric of their lives." - L. Tolstoy - (1828-1910)
- R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.
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