2.4 GHz remote controls

Book excerpt: In the first years of the new millennium, a revolution took place in remote control technology with 2.4 GHz. After frequencies in the two-digit MHz range had been the state of the art for many years, remote controls have conquered the band between 2.4 and 2.48 GHz. In addition to the basics and characteristics of 2.4 GHz radio waves, our author, Prof. Dr Roland Büchi, also teaches the practical aspects: such as the optimal alignment of antennas in model building, the correct arrangement of components in the model, the programming and configuration of remote controls as well as the avoidance and elimination of interference. From the content: • Introduction to the technology of wireless transmission • The components of a remote control • Features of 2.4 GHz remote controls • Antennas and their optimal alignment • Polarisation, antenna pattern and antenna gain • Use of diversity systems in 2.4 GHz remote controls • Modulation and transmission types • Standards and legislation on 2.4 GHz technology • User interfaces and programming • Sticks, wheels, encoders, switches, and buttons • Servo trim, reverse and travel adjustment • Dual rate, expo, and other functions • The instructor/student mode • Programming a microprocessor at the receiver • Telemetry – bidirectional communication • Installation and commissioning of the RC system • Interference suppression of components • Antenna installation and range testing • First Person View, FPV • Gyro systems