Posted by WB4SON on Jun 10, 2012; 5:59pm URL: http://elecraft.85.s1.nabble.com/K1-no-power-out-B2-tp7557347p7557423.html
The R-8 is a radial-less vertical. Unfortunately it has a tendency to put
all sorts of RF down the coax as the "counterpoise" system is too short
given the wavelengths involved.
You might want to buy a heavy-duty coaxial choke from DX-Engineering like
the
I used a R8 for years and had trouble even with 100 watts of power. I
can't imagine how bad it would be at 500 watts. Your station ground is
going to have to be top notch if you want to avoid trouble.