| Callsign | N4KPS |
| Radio Service | HA - Amateur |
| License Status | E - Expired |
| Grant Date | 2013-12-20 |
| Effective Date | 2013-12-20 |
| Expire Date | 2024-03-05 |
| Cancel Date | 2026-03-06 |
| Last Action Date | 2026-03-06 |
| End Date | 2024-03-05 |
| Available Date | 2026-04-06 |
| Applicant Type | I - Individual |
| Entity Name | SIMPSON, JOHN W |
| Street Address / Locality | 916 YORKTOWN RD TABB, VA 23693 |
| County | York County |
| Zip Location | 37°07'23.0"N 76°26'49.7"W |
| Maidenhead | FM17sc |
| FRN | 0009898156 |
| Licensee ID/SGIN | L00770494 / 000 |
| Licensee Class | T - Technician |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 4 / 4 / VA |
| Prev Callsign / Prev Class | KB4DFE P - Technician Plus |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 0001521870 |
| Phonetic weight / Morse weight | 12 / 56 |