| Callsign | N4SDH |
| Radio Service | HA - Amateur |
| License Status | E - Expired |
| Grant Date | 2004-02-13 |
| Effective Date | 2009-07-21 |
| Expire Date | 2014-02-13 |
| Cancel Date | 2016-02-17 |
| Last Action Date | 2016-02-17 |
| End Date | 2014-02-13 |
| Available Date | 2016-03-19 |
| Applicant Type | I - Individual |
| Entity Name | LONGSWORTH, LAWRENCE D |
| Street Address / Locality | 957 Dauphin Street Apt. #1 Mobile, AL 366042521 |
| County | Mobile County |
| Zip Location | 30°40'56.0"N 88°04'05.3"W |
| Maidenhead | EM50xq |
| FRN | 0010376044 |
| Licensee ID/SGIN | L00811925 / 000 |
| Licensee Class | T - Technician |
| Callsign Group | C - 1x3 |
| ULS/Geo Region | 4 / 4 / AL |
| Prev Callsign / Prev Class | KC4CCO P - Technician Plus |
| Next Callsign | |
| Trustee Callsign / Trustee Name | |
| Vanity Type | |
| ULS File Number | 9400281948 |
| Phonetic weight / Morse weight | 12 / 50 |