When he was young, he boxed, fished, did amateur radio and belonged to fraternities.

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"For that all credit must go to Milton Keynes Amateur Radio Society, " said Mr Clark.

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More than 70 of these OSCARs for Orbiting Satellite Carrying Amateur Radio have been launched and some have a limited data networking capability for text messaging.

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It carried a total of six picosatellites: the Aerospace pair plus four others, three of which were built by students at Santa Clara University and one by amateur radio enthusiasts.

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For amateur radio aficionados, the rewards run higher.

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The network of amateur ham radio operators regularly spring into action during emergencies, such as hurricanes, when other lines of communication are cut.

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In his supermarket, he built a big bandstand right in the middle of the floor and held amateur talent shows and did radio broadcasts.

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That figures, since the title role, a middle-aged carpenter and former amateur boxer known as The Hammer, is played by the radio personality and former improv comic Adam Carolla.

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"I would say (he should) stay an amateur because there's still so much to learn and so much to gain, " Lewis told Radio Five Live.

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"The Germans built the bunkers according to absolutely standard patterns, so we can walk into one and know straight away where everything will be - the hole for the radio mast, another for the periscope, the air vents, the sleeping area and so on, " said amateur archaeologist Jean-Francois Laquieze.

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