Position update: every 3 minutes

　　Working frequency: 161.975MHz / 162.025MHz

　　Output power: 34.8dBm±1.5dBm

　　Channel bandwidth: 25 KHz

　　Modulation mode: GMSK

　　Bit Rate: 9600b/s±50ppm(GMSK)

　　Dimension: 1260 mm x 90mm

　　Weight: 0.5 KGS

　　Battery: 12.6V, 4000mAh; rechargeable

　　Working time: More than 240 hours

　　Antenna: External 1.1m VHF antenna

　　GPS Module: IEC61108-1 standard

　　Working Environment: -20C – 55C

　　Waterproofing: IPX7