Marine Radio?

[Rocketfish]

Originally Posted by Batmann

Another inexpensive locating device that you can use is a chem light to make a buzzsaw during darkness. It has a very long range viability especially from the air

https://www.youtube.com/watch?v=5zH_dzakIGw

Interesting! i wonder if a regular glo stick from the dollar tree and a string would work almost as well.