| Callsign | KD8WWM |
|---|---|
| Radio Service | HA - Amateur |
| License Status | E - Expired |
| Grant Date | 2014-03-19 |
| Effective Date | 2019-08-22 |
| Expire Date | 2024-03-19 |
| Cancel Date | 2026-03-20 |
| Last Action Date | 2026-03-20 |
| End Date | 2024-03-19 |
| Available Date | 2026-04-20 |
| Applicant Type | I - Individual |
| Entity Name | Mattern, Robert T |
| Street Address / Locality | 1224 Elbur Ave Lakewood, OH 44107 |
| County | Cuyahoga County |
| Zip Location | 41°28'59.7"N 81°48'04.1"W |
| Maidenhead | EN91cl |
| FRN | 0023460348 |
| Licensee ID/SGIN | L01851043 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 8 / 8 / OH |
| Prev Callsign / Prev Class | G - General |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0008774469 |
| Phonetic weight / Morse weight | 10 / 74 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2014-03-19 | SYSGRT - New Systematic Call Sign Assigned |
| 2014-03-19 | LIISS - License Issued |
| 2016-11-17 | LIMOD - License Modified |
| 2019-08-22 | LIMOD - License Modified |
| 2026-03-20 | LIEXP - License Expired |