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Port managed Ethernet switch for radio-electronic equipment, has ventilation holes that are made in one side wall of cover opposite air inlet to cooling fans, in opposite side wall of case cover and in horizontal wall of case cover above processor radiator 2024-09-27
Direction finding antenna of decameter wave range with complex impedances, has upper capacitive load that is made of three thin conductors connected to upper point of vibrator through series complex impedance, and conductors that are connected to lower ground housing terminal of antenna feed 2023-12-28
Decameter wave range direction-finding antenna, has ground-based vertical thin vibrator, and counterweights placed on ground, where vertical thin vibrator is made rigid and mounted on high heel with opening support legs fixed to ground 2023-12-28