I got this antenna for free from a friend. It is really a FB DX-706 but the 706 configuration is to large for my small city lot, so I had to down size it to a FB DX-506 configuration.
When I got it, the antenna looked like it have been run-over by a freight train. Some tubes where missing, most of the tubes where bent, traps where full of sand, cobwebs, dead bees and wasps.
Luckily there was no aluminum corrosion. Dismantled the howl ting and cleaned it up.