Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4LIS callsign genealogy
Currently held by THOMAS, WILLIAM B
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by N4LIS's current licensee, walking backwards.
- RAPPA, LISA RNCgranted 2022-09-13cancelled 2023-04-14
Successor callsigns
Callsigns held now by people who previously held N4LIS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4LIS, oldest first.
- THOMAS, WILLIAM B TN2008-07-08 → cancelled 2020-07-17
- RAPPA, LISA R NC2023-04-14 active