Used for a couple of months to do testing and comparisons. With center support to mount on tower/pole B&W p/n FDMK. PVC pieces painted black to lower visibility.
See specs here: http://www.bwantennas.com/ama/fdipole.ama.htm
New from B&W:
FDMK $ 60
My price shipped to you CONUS $200
Email me at my gmail account listed on my page here or call (865) two two nine six thousand and one.