Checking my logs I have several past suspected beacons on various frequencies with the IDs DNR or DRNK, all using "MOJAVE DESERT" in the transmission somehow. All of them have been short duration, a few days only.
(edit) Now that I am home I can play the video in high def, could not do that from work. I see you were on my SDR when you made the video. I have not heard this beacon in the past when I looked in that freq range, so no idea when it showed up. But looking right now I see it there, but a bit different than when you recorded it.
T!