You never know exactly where your payload will land but this time of the year, in the UK at least, there is an increased risk of your payload landing in a field of tall cereal crop. To speed up recovery UKHAS recommend using a buzzer. The experienced electronics practitioner will have no trouble wiring up a buzzer but if, like me, you don’t ‘do’ soldering irons then here are a few suggestions:-
Attack alarms keep people safe but they can also be used to find your payload. The alarms can be activated at launch or can be rigged to activate on landing. The battery life for key chain alarms can be as long as 2 hours (http://personalalarms.com).
If your budget is greater and you have a smart phone then you can use a proximity sensor. Here a smart phone triggers an alarm on a fob to identify the payload location. Two notable models on the market include
2. KENSINGTON PROXIMO http://www.kensington.com/kensington/us/us/s/3068/proximo.aspx
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