... B20 is beacon channel GPS receiver, automatically selecting the nearest beacon station ... since last fix)Reacquisition: <1 sNEMA Information: GGA, GLL, GPS, GSA, GSV, MSS, RMC, VTG, XTE, ZDA and ... 325.0 KHzBand Interval: 500HzMSK adjustment: 50, 100 and 200 bits/secSignal Strength: 10µV/m minimum@ 100BPSPhysical Features ... 30 - +65Humidity: 100% condensing, unit fully sealed. Beacon GPS Receiver B20