Mark Magill wrote in a message to Roy Witt:
RW> Saves a whole lotta work. I use that in my commercial ground
RW> plane antennas that I sell.  Also, in the ground plane, I
RW> allow 5% longer radials by using this formula; 2880/146.5  =
RW> 19.6587"
 MM>         Out of idle curiosity, why the extra 5%?
I could be wrong on this (correct if so - Roy), but I believe
the added 5% changes the feedpoint impedance to more closely
match the feedline, just as the drooping of radials at a 45 deg
angle changes it as well...  I don't remember (from the tech-ref)
which way it changes, but know that it does :)  I wouldn't be 
surprised if the added length on the radials changes the arrays' 
angle of radiation, too...
73 2 U/Yrs 4 now
de Bruce - KB6LWN
Anderson Springs, CA (CM88ps)
kb6lwn@callsign.net
--- WtrGate v0.93 Unreg
---------------