| Callsign | KR4KLF |
|---|---|
| Radio Service | HA - Amateur |
| License Status | A - Active |
| Grant Date | 2026-03-11 |
| Effective Date | 2026-09-21 |
| Expire Date | 2036-03-11 |
| Cancel Date | |
| Last Action Date | 2026-09-21 |
| End Date | 2036-03-11 |
| Available Date | 2038-03-12 |
| Applicant Type | I - Individual |
| Entity Name | Koeller, Robert |
| Street Address / Locality | 6 Gaywood Cir Mountain Brk, AL 352133630 |
| County | Jefferson County |
| Zip Location | 33°30'24.0"N 86°44'39.6"W |
| Maidenhead | EM63pm |
| FRN | 0038096145 |
| Licensee ID/SGIN | L03017654 / 000 |
| Licensee Class | E - Amateur Extra |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 4 / 4 / AL |
| Prev Callsign / Prev Class | G - General |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0012191438 |
| Phonetic weight / Morse weight | 13 / 72 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2026-03-11 | SYSGRT - New Systematic Call Sign Assigned |
| 2026-03-11 | LIISS - License Issued |
| 2026-05-18 | LIMOD - License Modified |
| 2026-09-21 | LIMOD - License Modified |