CNN At This Hour With Berman and Michaela April 25, 2014 15:30:00
Investigated several different possibilities of what else it might be including monitor beacons that are used in the ocean on various species to track them and those do operate in that same frequency. however, what i discovered is the ones that ping at one-second intervals and operate on that frequency, have not been manufactured for decades. the chance that a battery would survive that long is pretty slim. at this point i ruled out in my mind any other possibility than a beacon from that black ...
Source: archive.org