Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4SWJ callsign genealogy
Currently held by WILLIS JR, JEFFREY S
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 N4SWJ's current licensee, walking backwards.
- WILLIS JR, JEFFREY SNCgranted 2023-01-10cancelled 2023-01-31
Successor callsigns
Callsigns held now by people who previously held N4SWJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4SWJ, oldest first.
- BANOV, NANCY L SC2008-09-23 → cancelled 2020-12-22
- WILLIS JR, JEFFREY S NC2023-01-31 active