Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4DU callsign genealogy
Currently held by Berry, Laura J
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 AB4DU's current licensee, walking backwards.
- Berry, Laura JARgranted 2014-11-18cancelled 2016-02-19
Successor callsigns
Callsigns held now by people who previously held AB4DU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB4DU, oldest first.
- HATCH JR, HOWARD H FL2007-03-22 → cancelled 2014-02-21
- Berry, Laura J AR2016-02-19 active