Ok,

I have not followed all of this thread.

One of the pdf's shows a shunt tapped inductor
as the base loading.

This is an auto-transformer match.

The entire inductor is set to cancel the capacitive reactance
of the aerial, then the coax feed is tapped to the 50R point,
The result is 50R J0.


For 5/8 aerials you may want to look at a physical short radiator
with a capacity hat to lower the angle of radiation.



wrote in message
ups.com...




Can the 5/8 wave antenna be matched with a tuning stub such as the
J-Pole uses?


--
73 for now
Buck
N4PGW

Yes, A 5/8 radiator with an input Z of 80-j300 with series 19cm of 450
ohm line will be about 55-j0 ohms. Of course all of this is highly
dependent on the antenna environment on 2m.
Gary N4AST