| Callsign | AC3OS |
|---|---|
| Radio Service | HA - Amateur |
| License Status | A - Active |
| Grant Date | 2018-05-21 |
| Effective Date | 2025-05-12 |
| Expire Date | 2028-08-14 |
| Cancel Date | |
| Last Action Date | 2025-05-12 |
| End Date | 2028-08-14 |
| Available Date | 2030-08-15 |
| Applicant Type | I - Individual |
| Entity Name | Groff, Alfred C |
| Street Address / Locality | 3229 Ivy Meadow Drive Frederick, MD 21704 |
| County | Frederick County |
| Zip Location | 39°21'17.6"N 77°22'33.2"W |
| Maidenhead | FM19hi |
| FRN | 0017742693 |
| Licensee ID/SGIN | L01397385 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | A - 2x2 |
| ULS/Geo Region | 3 / 3 / MD |
| Prev Callsign / Prev Class | N6THV G - General |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0011564672 |
| Phonetic weight / Morse weight | 10 / 60 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2025-05-05 | LIISS - License Issued |
| 2025-05-05 | SYSGRT - New Systematic Call Sign Assigned |
| 2025-05-12 | LIAUA - Administrative Update Applied |