Ok, here's the deal. Most antennas rotate horizontally in a circle - parallel to the ground. This one rotates vertically - perpendicular to the ground.
The antenna is mounted on the upper half of the tower. This antenna can be made to change from a North-South, figure-eight pattern to an omnidirectional, circular pattern just by rotating it 90 degrees. This unique design doesn't show up in any of the ham data seaches I've made. One of a kind...? maybe!

Note: The original rotor for this project failed under the side-load. It was not substantial enough to resist being turned by a gentle breeze and would not rotate if there were more than a half-pound of ice differential weight. It was recently replaced with a more serious rotor mounted directly on a thick alluminum plate. Some of the pictures below still show the old rotor.

Expect villagers with torches by nightfall.

CLICK THE PICTURES FOR A LARGER VIEW or Close Window and return to K9ZXO page.

Closeup: Coax input - RF feedpoint to the right. View of rotor plate. Note: Rotor was replaced with a larger unit and different mounting (see below). Click for large view.	Original rotor mount (in non-aligned, mock-up position). Note: Rotor was replaced with a larger unit and different mounting (see below). Click for large view.	Side view in mockup mode. Click for large view.	View down the radiator boom showing the PVC pipe mounting. Note: Rotor was replaced with a larger unit and different mounting (see below). Click for large view.
End view in mockup mode. Click for large view.	Second version in place - Vertical mode. This shows the new rotor installed. This version is far more substantial and is not affected by wind or ice. Click for large view.	Closeup of the new rotor and mount plate. Click for large view.	Vertical mode. This pix still shows the old rotor. Click for large view.
45 Degree mode. No test data yet on this split-mode configuration. Click for large view.	Horizontal mode. This pix still shows the old rotor and mount. Left upper dipole is Choudhury 20-40-17-10. Right is folded 80 meter. Click for large view.

Close Window and return to K9ZXO page.