Hot answers tagged communication
In both the U.S. and Canada, amateur radio operators serve an important role in providing emergency radio communications during war, disaster, terrorist attack, or whatever other emergency. So amateur radio operators take an extremely dim view of unlicensed operators using frequencies allocated to amateur (or sometimes commercial) radio. Many will even hunt ...
International standard and very easy to remember is the Y or N signal. If you want to communicate more than that, your signals should be easy and self-explaining. If you are e.g. climbing and it's not that obvious who needs help you could also inform the rescue team in the helicopter by pointing to the casualty after signaling Y.
Two arms up (Y) indicates you are in distress. One arm up, one arm down, indicates that you are not in distress. Also, when in distress, our friends in Europe tend to recognize the rule of 3 ( or 6 ): http://en.wikipedia.org/wiki/Distress_signal#Mountain_distress_signals If you have flags, or sticks and fabric to form flags out of, you can utilize the ...
Only top voted, non community-wiki answers of a minimum length are eligible