Peter
This is my anecdotal info for you.
Earlier this year I completed QRP WAS on 160m using a 50 ft top loaded
vertical.
When I built it, I arranged the length and loading to put the current max in
the center of the vertical portion. My idea was to maximize the total
current in the vertical portion.
It seems to have worked for me. I don't have a different antenna to compare
with,
so here you get a statistical sample of one :-)
I have to use overhead counterpoise wires, as I have nowhere near enough
open ground to lay radials.
Good luck and 73
Bob N6WG
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