Topband: Beverage over Inverted L

[AA8R <AA8R@AOL.COM>]

All,

I have 160m inverted L and the only way I can get a 500' plus beverage 
out to the NE/SW is over top of the radials that are on the ground.  In 
my research it looks like I'm inviting RF to be induced into the L's 
feedline and back into my ICOM 756 PROIII.....Not good.  Does anyone 
know of a TR switch or some black box to shield the PRO III?
Randy,  AA8R
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Topband Reflector