Complied with related IMO/ GMDSS requirements Designed for reliable operation in the roughest of marine evironments Lightweight and rugged construction is suitable for placing at liferafts. Complete set with a liferaft mounting kit Efficiently assisting ship or survival craft rescue operations Frequency : 9.2 ~ 9.5 GHz Polarization : Horizontal Vertical beam width : + 12.5 Degrees Azimuthal beam width : Omnidirectional to ± 2dB Radiated power : > 400mW ( + 26dBm) Form of sweep : Sawtooth( 12 sweeps) Pulse emission : < 100² Forward sweep time : 7.5² ± 1² Return sweep time : 0.4² ± 0.1² Recovery time : < 10² Response time : < 0.5² Effective sensitivity : better than -50dBm Duration of operation : 96 hours in standby condition followed by a minimum 8 hours of transmissin while being continuously interrograted by an X-band radar with a pulse repetition frequency of 1KHz at extreme temperatures Battery life : 5 years Temperature range : Operating -20 to 55 , Storage -30 to 65