| Callsign | KR4ISF |
|---|---|
| Radio Service | HA - Amateur |
| License Status | A - Active |
| Grant Date | 2026-01-06 |
| Effective Date | 2026-06-10 |
| Expire Date | 2036-01-06 |
| Cancel Date | |
| Last Action Date | 2026-06-10 |
| End Date | 2036-01-06 |
| Available Date | 2038-01-07 |
| Applicant Type | I - Individual |
| Entity Name | MacDonald, David |
| Street Address / Locality | 113 Creek Gravel Dr Madison, AL 357565616 |
| County | Limestone County |
| Zip Location | 34°38'37.3"N 86°49'05.3"W |
| Maidenhead | EM64op |
| FRN | 0037807559 |
| Licensee ID/SGIN | L02997006 / 000 |
| Licensee Class | G - General |
| Callsign Group | D - 2x3 |
| ULS/Geo Region | 4 / 4 / AL |
| Prev Callsign / Prev Class | T - Technician |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0012076060 |
| Phonetic weight / Morse weight | 15 / 62 |
Administrative History
| Action Date | Action Type |
|---|---|
| 2026-01-06 | SYSGRT - New Systematic Call Sign Assigned |
| 2026-01-06 | LIISS - License Issued |
| 2026-06-10 | LIMOD - License Modified |