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  1. M

    need info on how to modify a sirio sy27-4 for 10m

    Yep. I'm not in any hurry to cut any elements for 10m. I'll construct the antenna to spec and then see how far from resonance it is. In a purely stupid move to increase gain, I may want to add another section or two of boom at a later date and add some directors, so the distance between the...
  2. M

    need info on how to modify a sirio sy27-4 for 10m

    The element to boom mounting brackets on the Sirio SY27-4 look like they're permanently fixed in one position on the boom and would not be easy to move, if I felt motivated to do so. Has anyone figured out how to detach and move them along the boom?
  3. M

    Sirio SY27-4 Beam Install

    Nice thread everyone. Here is a free Yagi design program I found. I'm trying to build a 5 or 6 element Yagi for 10m voice so I will probably purchase the SY27-4 and then modify the boom and number of directors to give me some additional gain. de KD8NCP...