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Wow! I am deeply impressed. High quality, short but perfect description. Just one suggestion, to avoid false alarm, in case of strong wind, storm etc. So, you will have the first shakes on the parking place. Just imagine a second shake after 30 minutes on the same place because of a strong storm. It would be maybe a good idea to compare the last location with the location before the last one. When both have the same data, it would be a good idea to stop the device sending the message, translating the result as "false alarm".
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Using beer to get the can empty... Cheers!
And here comes the tenth use, the "Sperrtopf" antenna... Take a look down under the link, please:http://www.qsl.net/db5ag/Yagi-70cm1.htm
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