[TenTec] Vertical radial question

[Bill Tippett]

W9OY:

 >I have seen
published 0.05 lambda by a well known expert, so who
is right?  0.05 lambda means half the work and half
the wire.  Who is right?  Your ch 9 recommendation or
my ch 9 table?

         That table is based on impedance, not measured
field strength.  I already quoted W8JI's comment about
the ***field strength measurements*** he and W7EL made
showing poor correlation with impedance.  His measurements
and N6LF's are both based on actual field strength...not
derived from impedance.  I believe you may be making the
assumption that efficiency (determined by impedance changes)
equates to field strength, and hence the disconnect.  Here
are the quotes to that effect:

W8JI:

"As recently as few months ago W7EL and I measured a 40
meter vertical radial system here, and base impedance (when
only the ground system was changed) had no correlation with
measured field strength."

N6LF:

"They (Rudy's measurements) also show the continued increase
in field strength even when Rs has very nearly flattened out.

         Last post on this topic...I'm sure all will cheer!

                                         73,  Bill  W4ZV