Owen Duffy wrote in
:

"Peter" wrote in
:
....

My current 5/8 wave ground plan project is simply to get something on
air, however I plans to construct an improved version with the tapped
coil approach.

That lets you shorten it for a bit more gain, and a good match.

If you cut the vertical for 0.6 wavelengths, you should think of
starting with an inductor with reactance towards 1000 ohms.


I meant to elaborate on this a bit more. (Did I hear someone groan?)

If for example, the feedpoint Z of a 0.6 wave vertical over four quarter
wave radials was 150-j500, your tapped coil matching network can be
designed using bulk standard circuit theory to transform 150-j500 to 50
+j0, and nowhere do you use the missing 54° in those calcs. That might
suggest that the "missing degrees" are some kind of explanatory crutch
(or ham speak) that is not directly related to solving the problem.

Owen