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Radio amateurs are invited to take part in the MARS exercise now under way until April 10 in support of the US Department of Defense. The five USB channelized 60-meter frequencies are available for interoperability (communication between services).By convention, Channel 1 is designated the calling channel. This convention is established to train the amateur radio community to reach out on Chann...
Source: http://www.arrl.org/news/view/amateur-r ... -60-meters
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