Remember the pole lamp? popular in the 60's.
OK, they used to make a CB antenna that looked just like it.
It was called a helix dipole. Essentially it looked like a 'spring' inside the pole, only with compressed sections at either end, I assume to help tune it at manufacture. I can't remember if it was center fed or tap fed at one end at a coil. RS sold one in the 70s, about $40 if I remember right. Worked better than the back of set CB antennas. MAYBE a bit better than a regular 40" or so auto mag mount on top of your fridge, but most people couldn't fit a mag mount on top of their fridge, except for those little pieces of junk flexible ones.
The was a ham antenna built on a single piece of PCV back then. I forget who and what it was called, but I seem to remember it wasn't a dipole. It had to be mounted over a ground plane or radials of some kind. I guess the intent was to stand this in a room with radials under the carpet. The anenna was just over 6 feet tall and it looked like a coil on a 2" or less PCV pipe. It had multiple 'sections'. That is, there was about an inch or so of tight wound, then about 6 or 8 inches of loose, maybe 1 turn per inch, then another inch of close wound, then another 8 inches of loose, and so on. I saw the thing, but never got to use it..