Beacon Mini-TX is a TX-only mini version of Super-Beacon. Mini-TX is particularly good for tracking weight-sensitive mini- and micro-drones.
The latest hardware version of Mini-TX makes is very easy to connect with PixHawk as well because it has a dedicated 6-pin socket on the board. With just two wires (UART TX and ground), it is possible to get the location data from the Mini-TX to PixHawk and make the PixHawk believe it is connected to a real GPS.
Comparison of Mini-TX to Super-Beacons: