I estimated about 9 feet of 3/8" wide hollow copper coil. The top I saw on it was about 9 feet tall with a "T" on top of about 9 feet wide. The top to bottom was NOT adjustable but the "T" was adjustable to the sides and about 6 to 8 inches longer on the reflector. This was a 2 antenna set-up with 6 foot spacing BUT the reflector did NOT have the coil. I might be wrong but isn't the reflector AND the antenna supposed to be the same wavelength? By the way, the set-up I saw had copper pipe for the shaft and it was soldered like a regular plumbing fixture...
I don't think the rear element is a reflector...