https://www.milltechmarine.com/raymarine-ais5000-class-a-transceiver.html
Raymarine AIS5000 Class A AIS Transceiver | Encrypted Messaging & Blue Force Tracking
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https://www.army-technology.com/news/newsrack24-defence-introduces-new-blue-force-tracking-device-4189735/
Track24 Defence introduces new blue force tracking device - Army Technology
Mar 4, 2014 - Track24 Defence has introduced a new IP68-rated beyond line-of-sight (BLOS) satellite device for secure blue force tracking (BFT) and command and control (C2)...
blue force trackingdefenceintroducesnewdevice