| Callsign | KR4DUV |
|---|---|
| Radio Service | HA - Amateur |
| License Status | A - Active |
| Grant Date | 2025-05-09 |
| Effective Date | 2025-05-09 |
| Expire Date | 2035-05-09 |
| Cancel Date | |
| Last Action Date | 2025-05-09 |
| End Date | 2035-05-09 |
| Available Date | 2037-05-10 |
| Applicant Type | I - Individual |
| Entity Name | Mastriani, John K |
| Street Address / Locality | 3900 Stonebridge Rd Alexandria, VA 223061335 |
| County | Fairfax County |
| Zip Location | 38°44'59.2"N 77°06'26.6"W |
| Maidenhead | FM18kr |
| FRN | 0036531382 |
| Licensee ID/SGIN | L02931035 / 000 |
| Licensee Class | T - Technician |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 4 / 4 / VA |
| Prev Callsign / Prev Class | |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | |
| Phonetic weight / Morse weight | 14 / 68 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2025-05-09 | SYSGRT - New Systematic Call Sign Assigned |
| 2025-05-09 | LIISS - License Issued |