church bells have also been used fer that purpose fer a few centuries plus other bells includin bells aboard ship and on shore
Beer, Scotch or an expensive bottle of wine. Seems like anytime I break any of them out some kind of signal goes out and certain people materialize.
Heh. Take 'em off the cow first. Shaking the cow in a morse code sequence, well, U B tougher than me.
In our GOM Survival capsules we keep A hand held mirror A UHF-VHF radio Flash lights Orange streamer Water Toilet paper w/bucket Hatchet Tools Life Jackets Flare gun First aid kit Boat hook Diesel for the engine Rope Fish hooks and line A pail or bucket Paddles Fire Ext. A whistle
Well, ok. Was thinking, when posing the question originally, of "technology" available to the prepper rather than mil stuff. However ---