| Callsign | K4MJR |
|---|---|
| Radio Service | HV - Vanity |
| License Status | A - Active |
| Grant Date | 2019-12-31 |
| Effective Date | 2025-08-18 |
| Expire Date | 2029-12-31 |
| Cancel Date | |
| Last Action Date | 2025-08-18 |
| End Date | 2029-12-31 |
| Available Date | 2032-01-01 |
| Applicant Type | I - Individual |
| Entity Name | Robertson, Mitchell J |
| Street Address / Locality | 2107 Birchwood Dr. Huntsville, AL 35811 |
| County | Madison County |
| Zip Location | 34°47'43.3"N 86°30'35.8"W |
| Maidenhead | EM64rt |
| FRN | 0021069125 |
| Licensee ID/SGIN | L01654303 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 4 / 4 / AL |
| Prev Callsign / Prev Class | KO4AKS G - General |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | E - By List |
| ULS File Number | 0011693865 |
| Phonetic weight / Morse weight | 11 / 62 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2019-12-31 | LIISS - License Issued |
| 2019-12-31 | VANGRT - Vanity Call Sign Assigned |
| 2021-07-13 | LIMOD - License Modified |
| 2025-08-18 | LIMOD - License Modified |