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 http://www.dxengineering.com/Parts.asp?ID=1474&PLID=166&SecID=81&DeptID={112450B5-E9E3-4F36-9166-E52FA128D019}&PartNo=DXE%2DFCC050%2DH05%2DA<http://www.dxengineering.com/Parts.asp?ID=1474&PLID=166&SecID=81&DeptID=%7B112450B5-E9E3-4F36-9166-E52FA128D019%7D&PartNo=DXE%2DFCC050%2DH05%2DA> 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. Good luck! 73, Bob, WB4SON ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

