$GTCH The optimum frequency for long distance skyw

$GTCH The optimum frequency for long distance skywave propagation changes with the time of day and seasons due to the sun's influence on the ionosphere. An automatic antenna tuner (also called at ATU; antenna tuning unit), is a device connected between a transceiver and its antenna to improve power transfer while maintaining optimal communication performance. An automatic tuning system provides rapid power adjustment for frequency changes to optimize the output power, efficiency and with low distortion. Another evaluation direction will be using an azimuth-controlled antenna system together with an ATU, targeted to facilitate communication based on a location’s coordinates. This type of antenna includes a computerized mechanical control for the antenna position according to the unit’s geographical position. GBT will evaluate these types of technologies for optimal performance, noise control and signal’s reliability. The Infinia Long Range Radio system is targeted for wide variety of possible applications, among them are remote areas telemedicine, global tracking, tactical and emergency services.

https://www.nasdaq.com/press-release/gbt-eval...ystem-2021

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