The JTM-30C series NDB provides support for the "Blue Gerasa" semi-submersible lifting operation living support platform.

The 'Blue Gerasa' semi-submersible lifting operation living support platform has self-propelled capabilities and DP-3 dynamic positioning. It is classed by ABS and flies the Marshall flag. The ship is 137.75 meters in length, 81 meters in width, and 39 meters in depth. Its speed is 8 knots. It is equipped with 2 1800-ton Huisman cranes, with a main deck area of 2000 square meters. It is mainly used for oilfield services, living support, large module lifting, and wind power installation, etc. The helicopter platform has been upgraded from the JTM-30C series NDB; as a new generation fully integrated NDB, the JTM-30C series adopts reliable digital technology, with its frequency synthesis completed by a direct digital synthesizer (DDS). This technology provides high linearity and stability of carrier and modulation, with low noise and excellent frequency accuracy. Compared to traditional analog equipment, it fundamentally improves the accuracy and stability of the navigation signal, thereby providing more precise guidance for the helicopter. 

The main advantages of the JTM-30C series NDB (Non-Directional Beacon) lie in its high reliability, advanced technology, strong environmental adaptability, and convenient maintenance. 

· Extremely high reliability and redundancy: A dual transmitter configuration is available, automatically switching over in the event of a primary failure to ensure uninterrupted signal transmission. It supports dual power inputs of 110/220VAC and 24VDC, with automatic switching to guarantee continuous operation in the event of power failure. 

· Advanced digital technology: Utilizing digital drivers and direct digital synthesizers, it ensures high frequency stability, low noise and excellent frequency accuracy. The frequency can be adjusted in 1Hz increments within the range of 190 kHz to 2 MHz, and it is compatible with different frequency allocations worldwide. 

· Comprehensive monitoring and remote management: It features automatic monitoring capabilities, enabling real-time monitoring of carrier, modulation and fault status. It can be remotely accessed via PC (RS-485) or a web page to program and control parameters such as frequency, power, and Morse code. 

· Robust environmental adaptability: The cabinet achieves an IP66 protection rating, providing protection against wind and rain and being sturdy and durable. Built-in heating elements are included to cope with low-temperature and high-humidity environments, with a wide operating temperature range of -35°C to +55°C. 

· Integration and Flexibility: Adopting an integrated design, it includes components such as power supply and antenna tuning unit, making installation cost-effective. It is equipped with non-volatile memory, supporting presetting multiple transmission modes and Morse code sequences.