The Global Positioning System (GPS) allows users to accurately determine the location of objects on or above the surface of the Earth.
The HC-12s can transmit the information from a GPS receiver with no additional programming or circuitry.
You can transmit GPS coordinates to remote locations with as little as a GPS receiver, an HC-12 transceiver, and a battery.
Remotely transmitted coordinates would have to be received by another HC-12 transceiver and then processed with a microcontroller or computer. A simple setup such as the one above would allow you to create a small remote object tracker; it will alert you if the object leaves a predefined area, and then you will have a certain amount of time to
track the object before the transmitter goes out of range.