Colossus Air Cannon Antenna Launcher

This article describes a fun winter project:building an air cannon antenna launcher for ham radio use. The author and friends previously used a slingshot, but wanted a more exciting alternative. Inspired by their local club's launcher, they built their own versions with readily available PVC pipes and parts from a local hardware store. The total cost was around $40 per launcher. The article details materials, construction steps, and safety precautions.