Radio signals are the only type of communication that is practical for drones due to the limited power & weight constraints.

However there are a few other methods to transmit the control signals to the drone that use a different form of radio:
- LoRA modules allow you to to transmit at longer range than the modules previously mentioned which is often useful for drones
- 4G/5G module to transmit the signals over the internet; this typically introduces more latency which isn't always desirable, but is quite common on GPS missions.
- Aftermarket drone RF transceiver; this typically require significant modification on the hardware side for proprietary drones but comes with improved compatibility for other drone equipment.
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