Very important instruments are barometers, radio, and GPS need when paragliding flying. variometer or vario altimeter. Variometer is capable of detecting rates of climb or sink of 1cm per second, such is the case of the fly meter which uses extremely low noise electronics and such minute change in air pressure. A vario meter indicate climb rate or sink rate with short audio signals beeps, which increase in pitch and tempo during ascent, and a droning sound. Which gets Dipper as the rate of descent increases. It also shows altitude either above take off, above sea level, or at higher altitude, flight level. The main purpose of a variometer is in helping a pilot find and stay in the core of a thermal to maximise height again and conversely to indicate when a pilot is in sinking air and needs to find rising air.
Radio: pilot use radio for training purpose for communicating with other pilots in the air, particularly when travelling together on cross country flights and for reporting the location of landing. 2meter band is good one radio band, sometime used for inter personal communication and aviation.
GPS global positioning system is a necessary accessory when flying, where it has to be demonstrated that way pointer correctly. When flying at altitude, providing position information to allow restricted airspace to be avoided and identifying one's location for retrieval teams after landing out in unfamiliar territory.
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