Frank - " The wire is suspended about 6 inches above
my west concrete wall which is about 5 feet high. "

Frank - Clarification Please :
Is this the Wire Antenna Element ?
or the Coax Cable Feed-in-Line ?

If this is the Windom Wire Antenna Element ?
then the Antenna itself is only about 5' 6"
above Ground Level.

Question does the Concrete Wall have Re-Bar
(Iron-Metal inside) running through-out it ?
{ A Unified Ground Radial }

i want to know ~ RHF