The Double T Pipe Mount connects one HF stick to the center conductor and the other to the braid using a standard SO-239 connection. It can be mounted either vertically (For DX?) or horizontally for NVIS.
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This is the exact same setup I use for my portable station on 20 and 40. Unfortunately, it's not as "portable" as I would like but it is a solid performer. The only thing I did different is that I used a right angle adapter out of the antenna so my coax shoots straight down, and on the bracket I traded out the ordinary nuts for wing nuts so I could quickly tighten them without a wrench.
Using my MFJ antenna analyzer, I set them just right for the part of the band I use most. I can run below 1:5 SWR without an antenna tuner.
For anyone looking to do the same, the biggest hangup (besides not being as nicely portable as a Buddipole) is that these "hamstick specials" are monobanders. If you want to change bands, you have to pull down the entire assembly and change out the sticks. I have my 40 and 20 on their own, separate MFJ brackets to somewhat ease the process, but unless you're willing to drag along extra coax, an antenna switch, and the necessary hardware to fly two antennas at once, you're committing to more than modest effort every time you want to change bands.
I'm of course speaking in terms of a portable setup. If you're using it at a fixed QTH then extra stuff for multiple antennas may not be much of a consideration.
Very nice setup, Firewallsrus. We are thinking in the same way.