The Oak Ridge Amateur Radio Club demonstrated World War II-era military radio communications Friday and Saturday as part of the Secret City Festival. The group also hosted communications as part of the National Parks on the Air Program, celebrating the centennial of the National Park Service and the newly established Manhattan Project National Historical Park. A special event radio call sign, N4M, was issued for this event. The concurrence of these three events represented a once-in-a-lifetime opportunity for local amateur radio operators.
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