Some of my friends were asking for pictures of my HF antenna and my ham shack so I decided to make a video of it since I haven’t uploaded anything to youtube in a while. The rig is a Kenwood TS-120S 100watt radio and the antenna is a full wave 40m loop configured for vertical polarization. UPDATE: Since this video has been posted I hooked up an external 4:1 voltage balun and now it works 80m – 10m no problem. Now to set something up for 160m, 6m, 2m, and maybe either 1.25m or 70cm. 🙂
As test antenna was measured at 22 foot linear using a piece of triple #22 AWG conductor zip cord commonly used for older home intercom by Nutone. The base feed was run 11 feet up on an outside conductor, then returns 11 feet down on the center conductor back to the base and is connected to the other outside conductor that is the full 22 feet long.
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I don’t understand how the latter line works.I would think you would be transmiting through it.Thanks for posting.
Its a balanced feed line. Essentially the RF energy on one side of the latter line cancels out the radiated RF energy on the other side keeping it concentrated on the conductors until it becomes unbalanced by separating the RF flow in opposing directions at the feed point. In this case the radiated RF is no longer canceled out once it hits the loop.
The balun in the 949 is a piece of junk. They suck up power; you wouldn’t believe how hot they get. The fullwave horizontal loop is my favorite antenna, and I generally run them without a balun. I use ladderline, too. I guess the line radiates a bit, but I haven’t had any problems that a quarterwave counterpoise wouldn’t solve.
good video…thanks. 73, kf7dmy