over-the-horizon communications
зв'язок за межами (радіо)горизонту
зв'язок за межами (радіо)горизонту
artificial horizon (gyro horizon/ attitude indicator)
artificial horizon / attitude indicator, gyro-horizon
attitude indicator / artificial horizon, gyro-horizon
gyro-horizon / artificial horizon, attitude indicator
high frequency over-the-horizon (HF OTH) radar
over-the-horizon communication
forward scatter-over-the-horizon radar (OTH)