From K2CC Wiki

The Cushcraft X9 is a triband, 9 element yagi. It has up to 13dB of gain on 20 meters. The X9 is mounted to the tower on the Graham Hall Roof, below the A3WS. It is mounted on the rotator mast.

The manual is available here.


The X9 can be used on 10, 15 and 20 meters.