Amateur Radio Callsign: W4MRK
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W4MRK |
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Helms, Mark R
Arlington, VA (United States) |
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| License Status | Active |
|---|---|
| Operator Class | Amateur Extra |
| Name | Helms, Mark R |
| Granted | 2023-06-06 |
| Expires | 2033-06-06 |
| Address |