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Unverified85% confidenceFactTime unknown

内置GPS并通过406MHz上传经纬度，同时具备121.5MHz引导信标，属于成熟的双频求救方案

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Related Claims

Unverified内置GPS并通过406MHz上传坐标，配合121.5MHz归航信号，定位精度优于无GPS的老款PLB87% similar Unverified内置GPS并通过406MHz卫星系统求救，属于全球覆盖的正规救援信标而非依赖手机信号的设备80% similar UnverifiedGPS L1频段中心频率为1575.42MHz，接收机灵敏度约-130dBm至-160dBm，重发器输出功率需匹配此微弱信号量级，过强会超出接收机动态范围80% similar Unverified选带121.5MHz归航信号的机型：406MHz用于卫星定位报警，121.5MHz供搜救飞机/船只到达现场后近距离精确定位，缺少此频段会显著延长最后一公里搜救时间79% similar Unverified支持多系统的GNSS天线（GPS+北斗+GLONASS+Galileo）需覆盖1575.42MHz(L1/B1)频段，若设备用北斗定位务必确认天线标注支持1561MHz(B1)，纯GPS天线定位北斗信号会明显变差79% similar

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