Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4JSU callsign genealogy
Currently held by Reaves, Clarence W
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 W4JSU's current licensee, walking backwards.
- BOSWORTH JR, FRANK AALgranted 2014-05-30cancelled 2018-05-04
Successor callsigns
Callsigns held now by people who previously held W4JSU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4JSU, oldest first.
- Reaves, Clarence W AL2004-12-18 → cancelled 2016-12-20
- BOSWORTH JR, FRANK A AL2018-05-04 active