I am experiencing a unique and new problem that I have never encountered before. I erected an 80 meter double bazooka and when hoisted up to around 48 feet, 1 foot from the tower, the SWR will not resonate. The ends are 15-20 feet off the ground. The tower is an aluminum guyed (with kevlar) tower with hf yagi, 6 meter yagi atop. Fed with new 100 foot RG-8 coax, I cannot get the stupid thing to resonate. However when the apex is resting on a 6 foot step ladder, with ends almost on the ground, the antenna shows 200-300 khz bandwidth with very lower SWR which it is suppose to do. I took it down and put up an 135 dipole/inverted Vee fed with 450 ohm ladder line. Pretty much the same problem, no resonant spot on the 75 meter band. Anyone have any ideas what I might be seeing? This is something new to all my years of putting of wires. Sure has me stumped. The distance from the tower (apex) shouldn't be an issue, and the tower grounding shouldn't affect it either. Any ideas of where or what to look for? Thanks for reading this!