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| Year | Call Sign | Location |
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| 1959 - 1960 | KN9TQJ | Lawrence, Indiana |
| 1960 - 1969 | K9TQJ | Lawrence, Indiana |
| 1962 - 1964 | KR6DD | Ryukyu Islands - Okinawa |
| 1964 - 1968 | W9JVM | Purdue University - Additional Station License |
| 1969 - 1970 | W5RDX | Richardson, Texas |
| 1970 - 2006 | W0NGA | Colorado Springs, Colorado & Phoenix, Arizona |
| 2007 - 2008 | K7TQJ | Prescott, Arizona |
| 2008 - Now | W7TQJ | Prescott, Arizona |
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Winter of 1959 - 1960 Callbook Listing for KN9TQJ - Novice Class | Summer of 1962 Callbook Listing For K9TQJ |
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Fall of 1963 Foreign Callbook Listing For KR6DD | Summer of 1968 Callbook Listing for W9JVM |
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1970 Winter Callbook Listing for W5RDX | 1979 Callbook Listing For W0NGA |
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