Finally got my Hy-Gain SPT 500 penetrator set up for 11 meter

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I've had nothing but SWR troubles with the Maco ever since I've had it new as original owner. Several times I've reset the SWR, carefully marked the radials (which have never moved). Weather seems to affect it easily. Heavy rains drive the background up 1-2 S Units. It works great as long as the weather stays fairly constant. I've changed radios, coax, used No Ox, greased and waterproofed connections, and the problem still comes and goes with weather. I have two other ground planes and a beam. They all are consistent. Maco even sent me a new 5/8 as I complained so much. So, I'm trying the Penetrator.