Getting Started with Drones

Chapter 7. Telemetry Radios

Software Monitoring and Control

By now, you may have noticed one very important thing about RC transmitters: they only send communications in one direction, from the transmitter to the aircraft. In order to gain access to any of the onboard data from your aircraft, we have to use a special two-way radio that is known as a telemetry link.

Pick the Right Frequency

Telemetry radios operate on two standard frequencies. In the United States, we typically use the 915 MHz band, while the 433 MHz band is favored in Europe. These standards are established to help avoid interference from other electronics on the open market. Operating on the wrong frequency band can be illegal in certain parts of the world. Be sure to ...