| Callsign | AA4MO |
|---|---|
| Radio Service | HV - Vanity |
| License Status | A - Active |
| Grant Date | 2026-03-27 |
| Effective Date | 2026-03-27 |
| Expire Date | 2036-03-27 |
| Cancel Date | |
| Last Action Date | 2026-03-27 |
| End Date | 2036-03-27 |
| Available Date | 2038-03-28 |
| Applicant Type | I - Individual |
| Entity Name | Obuchowski, Matthew T |
| Street Address / Locality | 10004 S Oakley Ave Chicago, IL 60643 |
| County | Cook County |
| Zip Location | 41°42'01.0"N 87°39'47.8"W |
| Maidenhead | EN61eq |
| FRN | 0036308930 |
| Licensee ID/SGIN | L02906596 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | A - 2x2 |
| ULS/Geo Region | 4 / 9 / IL |
| Prev Callsign / Prev Class | KE9CQR G - General |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | E - By List |
| ULS File Number | |
| Phonetic weight / Morse weight | 9 / 54 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2026-03-27 | LIISS - License Issued |
| 2026-03-27 | VANGRT - Vanity Call Sign Assigned |