## 3 Prototype Description and Implementation
### Prototyping of Hardware Components
Furthermore, this model of glasses uses a 5.8 GHz diversity receiver (this means that it incorporates two types of antennas: one linear and one omnidirectional, polarized in the same direction as the video transmitter antenna that is on board the UAV). Receiver diversity technology is developed to minimize the effect of multipath cancellation and extend the useful operating range of the system. The receiver can tune up to 40 channels to avoid interference with the signal from other vehicles transmitting data. Adding to the video receiver, the glasses also incorporate a screen where the operator can see the image taken by the camera and transmitted in real time with minimal delay. This makes possible not only to see what the UAV camera is transmitting, but also enables the operator to know the location of the UAV and have a visual reference of its surroundings to be able to maneuver properly. When designing the video transmission subsystem for the deployment that has been put forward, it was necessary to research what components could meet the minimum requirements formulated for the UAV. The main challenge to be faced was maintaining image quality at a distance range beyond two kilometers. The chosen AKK receiver has a theoretical range of four kilometers (although it is usually dependent on the conditions of the environment where it is used) so it was deemed as valid for the location where the deployment tests were to be done. The quality of the image offered enables the operator to orient themselves in the air and manage the aircraft in a timely manner. 4. Radio control subsystem: like the video system, the UAV radio control management system must be adapted to the needs of the project. The system is basically made up of three main components: firstly, the transmitter by which the pilot can control the UAV; secondly, the radio control transmitter module connected to the transmitter, and finally, the radio control receiver on board the UAV. The transmitting and receiving modules must be connected and synchronized through a process called \"binding\". This process only needs to be done once during initial aircraft setup. The receiver that goes on board the drone is responsible for transmitting the signal received from the station to the Navio2 controller. The list of components that has been used for this purpose is as follows:  
1. Station: Taranis QX7 [41], this station offers numerous possibilities due to the following facts: (a) it integrates an internal RC module that works with the Pulse-position modulation (PPM) and Serial Universal Serial Bus (SBUS) protocols (it also incorporates a port to connect external modules that work in different frequencies and with different radio control communications protocols), (b) it implements OpenTX [42], an open-source firmware for radio control transmitters that is highly configurable and incorporates many more features than usually found in traditional radios (also, daily feedback from its users ensures the continued stability and quality of the firmware), (c) it has numerous configurable switches to activate Pulse Width Modulation (PWM) channels and (d) it can work integrated into the UAV, such as the choice of flight mode. Radio Controller (RC) Transmitter Module: TBS-Micro Transmitter Crossfire V2 [43]. The transmitter manufacturer is specialized in the design of radio-controlled components for long-range use. The communications protocol that it usually uses is CrossFire (CRSF), which is developed by the manufacturer itself (TBS) and its main advantage is a faster cycle time and bidirectional communications, enabling data such as telemetry to be included in the data flow without the need to use additional ports. Since the controller used is not compatible with the CRSF communications protocol, the one used will be Pulse Position Modulation PPM, which is the protocol recommended by the manufacturer of the flight controller. Its main advantage is that only one signal cable is needed to receive the radio control channels (channels 8 to 16).