A ranging calculator can be operatively coupled to the receiver and calculate {HEAD ~ a distance} between the locator transceiver and {TAIL ~ the source} of the distress messages based on the time delay between transmitted ranging commands and corresponding received ranging messages 
A ranging calculator can be operatively coupled to the receiver and calculate { HEAD ~ a distance } between the locator transceiver and { TAIL ~ the source } of the distress messages based on the time delay between transmitted ranging commands and corresponding received ranging messages
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH