Comparison DJI RC Plus 2 Enterprise vs DJI RC Pro

The presence of a display controller in the design and the type of installed matrix.

The screen in remote controls for RC models can play different roles. Thus, it is possible to display a picture from the camera in real time on a color display, and service parameters are often superimposed on top of it (for example, flight altitude, speed, remaining battery charge level, all sorts of service notifications, etc.). Monochrome screens are usually assigned other tasks - first of all, they are responsible for tracking telemetry (for more details, see the corresponding paragraph).

It is customary to equip advanced controllers for RC models with a display. Simple remote controls are often presented without a display. And according to the types of matrices, there are the following screen options in controllers:

- OLED. In the context of control controllers, OLED screens usually mean the simplest solutions with a black backing and white symbols for displaying settings and/or various service information. Such displays are based on organic light-emitting diodes, and their key advantage is the ability to easily read the displayed information in poor ambient lighting.

- LCD. As a rule, these are the simplest monochrome screens - either segmented to display a limited set of characters, or based on a single-color...LCD matrix, suitable for text and basic graphic information. LCD screens provide additional convenience: they can display various important data, for example, the flight altitude of a conventional quadcopter, the speed of movement of the RC machine, the signal level, the remaining battery charge, notifications of problems, etc.

- TFT. A TFT display means a screen consisting not of segments, but of full pixels and suitable for displaying various types of data: graphic symbols, images, and even streaming video from an installed camera. TFT screens provide the most extensive visualization of settings; they are used in controllers for controlling drones and other RC models in FPV (First Person View) mode.

Display diagonal size in inches. The larger the display, the more accurate and easier to read the information displayed on it, the better the video stream can be seen on the screen in real time. On the other hand, a display that is too large entails an increase in the size and cost of the controller. In remote controls with the ability to display only service parameters, the screen size is usually from 1 to 3 inches, in copies with full color matrices and support for broadcasting a video stream - about 5 - 7 inches diagonally.

Compatibility of the controller with specific RC models. For many popular models, their own specialized remote controls are produced, which are initially tailored to the characteristics of a particular model. However, it is often possible to replace the “native” controller with a third-party one - many models of this type are produced with compatibility for a certain list of RC equipment. Before purchasing, it makes sense to check compatibility to avoid unpleasant surprises.

The frequency at which communication takes place between the controller and the RU model.

In cars and radio-controlled special equipment, the most widely used analog standards are 27, 35, 40, 49 and 75 MHz. The base frequency is considered to be 27 MHz, and other options are used as an alternative to it, which ensures that signals from different remote controls are not mixed when located in the coverage area of several transmitters.

The 915 MHz frequency (or 868 MHz for certain regions) is often used in controllers to control drones using the ELRS protocol (see “Communication Protocol”). It provides increased range but requires large antennas.

Digital data transmission for controlling RC models and quadcopters can be performed at frequencies of 2.4 GHz, 5.1 GHz, 5.8 GHz. A significant advantage of these options is the channel separation technology, thanks to which the remote controls can operate in close proximity to each other without creating problems. The gigahertz bands differ in their communication range and throughput. Note that theoretically the 2.4 GHz frequency may be more susceptible to interference, because Many modern Wi-Fi modules work on it. However, thanks to the aforementioned channel distribution, such problems rarely arise.

Rated power of the transmitter installed in the controller. This is an important parameter for ensuring reliable control of the RC model at a distance. The power of the transmitter is measured in milliwatts (mW), and the higher the number, the further the signal reaches and the more reliable control will be over long distances or in conditions of interference. In professional models of remote controls, the transmitter power can exceed 1000 mW (1 W).

The operating range of the transmitter in the control panel, in other words, is the maximum distance that the RC model can move away from the transmitter without losing control. The greater this distance, the more convenient it is to operate the car, but at the same time, powerful “long-range” transmitters have corresponding dimensions, weight and cost. In practice, the range may be less than stated - for example, due to the presence of obstacles in the signal path or due to weak batteries. Therefore, it is best to choose according to this parameter with some reserve.

The total number of controls in the remote control directly depends on the design, manufacturer, model and, most importantly, the purpose of the controller. This paragraph specifies all switches, buttons, sticks, sliders, scroll wheels and other elements used to control the RC model.

The amount of built-in memory on board the controller.

Advanced devices are equipped with a data storage device - it is used to store firmware and record video streams from the RU-model camera. The larger the storage capacity, the more filmed videos can be stored in the controller’s memory. On the other hand, this characteristic directly affects the price. It is also worth considering that some remote controls allow you to supplement the built-in storage with a memory card (for more details, see “Card Reader”).

The presence of a card reader in the controller is a device for reading removable memory cards.

A card reader allows you to expand the standard memory capacity of your own drive, and in its absence, it will serve as the only option for storing data. At the same time, removable cards have a number of advantages: they are noticeably cheaper than built-in storage (in terms of per gigabyte of volume), and the capacity of such a card can be chosen at your discretion. Since card readers are available in many modern devices (laptops, smartphones, tablets, etc.), replaceable cards make it easier to exchange information with such devices.