Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4JAB callsign genealogy
Currently held by BUTTNER, JOSEPH A
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 W4JAB's current licensee, walking backwards.
- BUTTNER, JOSEPH AVAgranted 2003-02-19cancelled 2006-05-13
Successor callsigns
Callsigns held now by people who previously held W4JAB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4JAB, oldest first.
- TRAVIS, JAMES W FL1997-07-28 → cancelled 2000-09-08
- BUTTNER, JOSEPH A VA2026-03-17 active