Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WW4JSB callsign genealogy
Currently held by Bartmess, Jeffery 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 WW4JSB's current licensee, walking backwards.
- Bartmess, Jeffery SFLgranted 2018-01-19cancelled 2018-02-16
Successor callsigns
Callsigns held now by people who previously held WW4JSB.
No current licensee on record previously held this callsign.