Jim Kelley wrote:
It's no coincidence that the phase of the standing wave varies by 90
degrees along the length of a 90 degree standing wave antenna.

Here's the phase of the standing wave along 90 degrees
of monopole as reported by EZNEC. Clearly, your assertion
is false as the current phase varies by only 2.62 degrees
between segment 1 and segment 10.

1/4WL Vertical over real gnd 4/7/2009 7:33:02 AM
--------------- CURRENT DATA ---------------
Frequency = 7.2 MHz
Wire No. 1:
Segment Conn Magnitude (A.) Phase (Deg.)
1 Ground 1 0.00
2 .97418 -0.40
3 .92577 -0.80
4 .85611 -1.14
5 .76657 -1.44
6 .65894 -1.71
7 .53532 -1.96
8 .39796 -2.20
9 .24889 -2.42
10 Open .08785 -2.62

--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com