This is a 3D printed spiral support structure for the wires of a 435 MHz QFH antenna. The antenna provides a dome-shaped hemispherical pattern that is suitable for operation (transmit or receive) on various amateur radio orbiting satellites without the need for a motorized tracking system. A video of the antenna design/assembly/test, as well as the capture of some signals received with the antenna, can be found at
The author marked this model as their own original creation.