I wish hubby and I had known some of this before we got stuck in Death Valley one night several years back.
I tried to light big bonfires that kept fizzling out (strangely enough in a National Monument) to get the attention of the China Lake flyers with zero luck. I was thinking fire would be highly visible at night. Nope, but it helped keep us warm.
That frequency is the standard frequency for aviator's emergency locator beacons. It's monitored by satellite, and produces a fairly fast response when there's an activation on it. There's a similar emergency calling frequency in the Marine radio spectrum.
And now..... there's one available for outdoors folks. Here's one site that offers info on personal ELB's.
http://www.noaanews.noaa.gov/stories/s1168.htm