| Callsign | KR4MTJ |
|---|---|
| Radio Service | HA - Amateur |
| License Status | C - Canceled |
| Grant Date | 2026-06-10 |
| Effective Date | 2026-08-10 |
| Expire Date | 2036-06-10 |
| Cancel Date | 2026-08-29 |
| Last Action Date | 2026-08-29 |
| End Date | 2026-08-29 |
| Available Date | 2028-08-30 |
| Applicant Type | I - Individual |
| Entity Name | Johannes, Wilhelm S |
| Street Address / Locality | 1713 S Hayes St Apt B Arlington, VA 222025520 |
| County | Arlington County |
| Zip Location | 38°51'24.7"N 77°03'05.4"W |
| Maidenhead | FM18lu |
| FRN | 0038428991 |
| Licensee ID/SGIN | L03052754 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 4 / 4 / VA |
| Prev Callsign / Prev Class | G - General |
| Next Callsign | NY6H |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0012147193 |
| Phonetic weight / Morse weight | 13 / 68 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2026-06-10 | SYSGRT - New Systematic Call Sign Assigned |
| 2026-06-10 | LIISS - License Issued |
| 2026-07-13 | LIMOD - License Modified |
| 2026-08-10 | LIMOD - License Modified |
| 2026-08-29 | LICAN - License Canceled |
FCC comments
| 2026-08-29 | Issued vanity call sign. |