i agree with freecell, the early shaki bigstick and super bigstick are coaxial dipoles in a tube even the later 3 piece shakis are coax in a tube, people here used to idolise them because they cost more than an aluminum halfwave endfed and worked good in skipland, i tested them at 36foot in my dads field against aluminum gp27 endfeds and the shakespeers always lost, the main reason people thought they worked good for skip is conditions were so good back then you could work dx with 4w and a dv27 on a biscuit tin, back in the day people that wanted to dx just went and bought the most expensive antenna and put up higher than the none dxers then sat telling the rest how great the superbigstick was, in reallity they were the worst performing halfwave antenna i ever tested, i swapped my superbigstick for a brand new A/S mighty magnum 3, the guy who went and bought the magnum to swap me thought he was robbing me hahahaha wrong, the magnum wiped the floor with the superbigstick.