rntPassive Sonobuoys tAN/SSQ-53D (3) (PASSIVE SONOBUOYS)tMain characteristics of Sonobyoys are as follow: tWeight Under 13 KgtLength 914 (+3.575, -4.355) mmtDiameter 124 (+0.175, -3.35) mmtPower Seawater - Activated BatterytDescription DIFAR / PASSIVEtAcoustic / Frequency 5Hz ~ 2, 400HztOperating Time 0.5, 1, 2, 4, 8 HourstTransmission 0 to 99CHtFrequency Range 136MHz ~ 173.5MHztRF Transmitter Outlet Power 1W minimumtActivation Water Temperature (-20°C ~ 55°C)tOperating Temperature 0°C ~ 35°CtMaximum Release Altitude 30, 000FT / 370KnotstOperating Depth 30, 50, 120, 300mtShelf Life 05 years in sealed containerrn Show More