FlareAlert introduces our Emergency LED Beacon Kits. Designed for professional firefighters, law enforcement, and military, as well as personal emergency use. Unlike incendiary strike flares, ...
Batteries flat and no cellphone coverage and you need to communicate hundreds of miles? No problem. [Peter Parker VK3YE] has created a wind-up ham radio transmitter built into a discount store ...
A new patent describes multiple ways in which an iPhone could use cell signals, wi-fi or even other nearby devices to get an emergency distress beacon out, plus ways of prolonging the battery until ...
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