| Callsign | KR4DSI |
|---|---|
| Radio Service | HA - Amateur |
| License Status | C - Canceled |
| Grant Date | 2025-05-06 |
| Effective Date | 2025-05-06 |
| Expire Date | 2035-05-06 |
| Cancel Date | 2025-06-21 |
| Last Action Date | 2025-06-21 |
| End Date | 2025-06-21 |
| Available Date | 2027-06-22 |
| Applicant Type | I - Individual |
| Entity Name | Martens, Mark D |
| Street Address / Locality | 12337 Woodrose Ct Apt 1 Fort Myers, FL 339073628 |
| County | Lee County |
| Zip Location | 26°33'50.0"N 81°52'13.0"W |
| Maidenhead | EL96bn |
| FRN | 0036795953 |
| Licensee ID/SGIN | L02913303 / 000 |
| Licensee Class | T - Technician |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 4 / 4 / FL |
| Prev Callsign / Prev Class | |
| Next Callsign | KR4MDM |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | |
| Phonetic weight / Morse weight | 15 / 60 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2025-05-06 | SYSGRT - New Systematic Call Sign Assigned |
| 2025-05-06 | LIISS - License Issued |
| 2025-06-21 | LICAN - License Canceled |
FCC comments
| 2025-06-21 | Issued vanity call sign. |