Transmitter and Receiver for Drones

Aditya Kekre
4 min readJun 6, 2020

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A lot of people are building interest in flying a drone and knowing its ocean of applications that it can be used for. Drones are one of the fastest-growing technology industries in the world with new innovations in its components every now and then. With its varied application, the demand for drones is increasing day by day. Maybe you want to get in on the future of aerial photography. Maybe you’re looking for a fun and futuristic toy for your kids.

Drones can’t fly themselves! Well, they can but the whole point of flying a drone is actually controlling it. Drone controllers are everywhere in the drone world, but have you ever stopped to think about how they actually work? , which controller to choose, and which site is the best to buy a drone controller.

In this blog we will look at all of these things starting with the basics of drone controllers, looking at how drone remote controllers work and the different features they give drone pilots.

Drone Transmitter

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 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.

Radio Receivers

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.

Radio Receivers can have the following features:

· Telemetry (sending data back to the transmitter)

· Redundancy function (two receivers connected together, if one loses connection, the second one takes over)

· Easy removable antennas (more convenient with connectors if the antenna is to be replaced)

· Possibility of firmware upgrades (for bug fixes)

Telemetry is the data transmitted from the Radio Receiver back to the Radio Transmitter.

It usually contains a variety of information, depending on the type of radio and flight controller. The most crucial pieces of information are battery voltage reading, current draw and “RSSI”

Radio communication protocols can split into two groups:

· TX Protocols between Radio Transmitter and Radio Receiver.

· RX Protocols between Radio Receiver and Flight Controller

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.

Radio Receivers are usually manufactured with two antennas to ensure the best reception.

Receivers usually come with two antennas for 2.4GHz Frequency. To achieve the best signal reception it is recommended to keep them at a 90degree angle in relation to each other when installed on the multi-rotor.

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.

It might take a little time for you to find a transmitter and Receiver which are compatible with each other. Well not to Worry! Here’s a Link for you Flysky Transmitter with Receiver

For Additional Information on Radio Transmitters and Receivers for drones do visit Robu.in.

I hope you have learned how important are transmitters and receivers for drones and how do they work.

This information above was referred from getfpv and oscarliang.com

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