Tom, KG3D, I have a Hustler 6BTV antenna, and it does not use the "6 Spoke Spider" for 40M, like the 4BTV does. Mine is ground mounted and works great, even with no radials. I use an LDG AT11-MP automatic antenna tuner with it on all bands, 10M - 80M. 72/73, Carl, WN3DUG K2/100 S/N: 3092 KX1 S/N: 271