| Callsign | AK6SO |
|---|---|
| Radio Service | HA - Amateur |
| License Status | A - Active |
| Grant Date | 2018-11-06 |
| Effective Date | 2026-03-18 |
| Expire Date | 2028-11-06 |
| Cancel Date | |
| Last Action Date | 2026-03-18 |
| End Date | 2028-11-06 |
| Available Date | 2030-11-07 |
| Applicant Type | I - Individual |
| Entity Name | Stumbo, Matthew T |
| Street Address / Locality | 2500 Paloma St Pasadena, CA 91104 |
| County | Los Angeles County |
| Zip Location | 34°09'55.3"N 118°07'25.5"W |
| Maidenhead | DM04wd |
| FRN | 0027932334 |
| Licensee ID/SGIN | L02220476 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | A - 2x2 |
| ULS/Geo Region | 6 / 6 / CA |
| Prev Callsign / Prev Class | KS6PKY G - General |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | |
| Phonetic weight / Morse weight | 10 / 56 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2026-03-16 | LIISS - License Issued |
| 2026-03-16 | SYSGRT - New Systematic Call Sign Assigned |
| 2026-03-18 | LIAUA - Administrative Update Applied |