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I have been thinking of just that exact idea for a 2m quad I was thinking about building.The old Alliance U-100 rotators were perfect for this as they allowed the mast to pass straight thru the rotator. Turned over on it's side it allows the boom to pass thru and be rotated 90 degrees for polarity changes. One feedline and two polarities by rotating the boom to switch polarities. The U-100 rotators are old but there were thousands in use and are still around.

[QUOTE="Captain Kilowatt, post: 364809, member: 39"] I have been thinking of just that exact idea for a 2m quad I was thinking about building.The old Alliance U-100 rotators were perfect for this as they allowed the mast to pass straight thru the rotator. Turned over on it's side it allows the boom to pass thru and be rotated 90 degrees for polarity changes. One feedline and two polarities by rotating the boom to switch polarities. The U-100 rotators are old but there were thousands in use and are still around. [/QUOTE]

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