A Drone Radio Transmitter is an electronic device that uses radio signals to transmit commands wirelessly via a set radio frequency over to the Radio Receiver, which is connected to the drone being remotely controlled. In other words, it’s the device that translates the pilot's commands into the movement of the multirotor. An FPV Drone Radio Transmitter transmits commands via channels. Each channel is an individual action being sent to the aircraft.
1. Roll. Moves your drone left or right in the air, literally “rolling” your drone.
2. Pitch. Tilts your drone forward or backward.
3. Yaw. Rotates your drone clockwise or counterclockwise, allowing you to make circles or patterns in the air.
4. Throttle. Controls the amount of power sent to your drone, which makes the drone go faster or slower.
Frequency of the Transmitter
An FPV Drone Radio Transmitter commonly uses the following frequencies: 27MHz, 72MHz, 433MHz, 900MHz, 1.3GHz, and 2.4Ghz, 433Mhz, 900Mhz, and 1.3GHz are typically used in long-range FPV and RC systems.
OpenTX is an open-source custom firmware made for RC radio transmitters, compatible with the following radios:
· FrSky Taranis X9D, Q7X, X9E
· FrSky Horus X10, X12
· Turnigy 9X
· FlySky 9X
OpenTX is a highly configurable system offering plenty of options for all types of RC models. It is created by FPV pilots with pilots in mind.
Wi-Fi and Bluetooth have made it possible for drone manufacturers to create device controls that run on smartphones or tablets. Not just a smartphone version of your RC transmitter, but high-tech controls.
A Radio Receiver is the device capable of receiving commands from the Radio Transmitter, interpreting the signal via the flight controller where those commands are converted into specific actions controlling the aircraft.
A Receiver must be compatible with the Radio Transmitter which in most cases means that the same brand of Rx and Tx needs to be purchased in order to establish a communication. There are however radio receivers that may work with the same protocol but are not from the same brand.
Frequencies must also be the same on both Rx and Tx. For instance; a 2.4GHz Transmitter can only work with 2.4GHz Radio Receiver.
Thus, while selecting your Drone Transmitter and Receiver, it is important that they are compatible with each other in terms of frequency and other parameters. Also, it is necessary that both the components have the size and features according to the specifics needed. It is recommended to purchase a high-quality Radio transmitter with Receiver when starting out to fly your own drone as it is one of the components that will last long enough.
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