In the middle of the antenna-group, you see the KR500-A rotator. At the vertical tube, which is in the horizontal-rotator is a horizontal aluminium-tube fixed with 50mm outer diameter and 42mm inside diameter and a length of 120cm.
The 70cm-antenna group is mounted on a horizontal tube of aluminium with a outer diameter of 40mm, which is inside the 50mm horizontal tube. On the inside tube, there are two sprocketwheels. about 30cm below this tube, there is the KR500-A-rotator. He turns a tube with about 120cm length and two sprocket-wheels at the end which makes two chain-gears with exactly 1:3 .
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