[CQ-Contest] 160 Radials

[K5NZ@aol.com (K5NZ@aol.com)]

Those using elevated radials, do you think it hurts to ground them to a 
ground rod at the base of the antenna?  I have an inverted L ( 1/4 wave ) 
with 4 radials about 4 ft off the ground, grounding mine cleans up the swr 
and makes it flat for about 50kc, without about 15kc.  Seems I remember 
reading they should be independent of a true ground?

TIA  nz