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Old 23-Jun-2006, 18:06
Felix Felix is offline
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Mood: Is 112 dB loud enough?? What??
I have an AIM beacon and it uses 6 LEDs arranged in a 20 mm circle. It is powered by 8 AA batteries, or a 12V DC adaptor. It also has a low and high power switch.

I would imagine you'd want an LED with the smallest possible lens angle, maybe 15 deg, to get a well focused beam. It also increases the distance it can reach.
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