While looking around for a 433 tracking antenna we found out that:
1) There isnt much choice for 433Mhz patch antenna
2) There isnt much choice for a solid housing
So we decided to custom make one ourselves. It has a 433 patch antenna that fits onto RP-SMA of the 3DR radio. The radio sits inside the housing and the USB cable comes out from underneath it. The metal housing has 3 servos and a old ardupilot. It takes 5V and be powered by a 2S or 3S battery. The base of the tracker fits into a standard tripod mount. We tested it out and the range is much longer than standard 3DR radio with antenna and it works with the mission planner. We also notice the plane position on mission planner updates more frequently.