Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3BD callsign genealogy
Currently held by Stock, Alan 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 AB3BD's current licensee, walking backwards.
- Guth, Dean MPAgranted 2015-11-10cancelled 2016-10-29
Successor callsigns
Callsigns held now by people who previously held AB3BD.
- Stock, Alan JPAgranted 2023-09-12
All historical holders
Every license row we've seen with the callsign AB3BD, oldest first.
- Stock, Alan J PA2003-02-28 → cancelled 2003-09-09
- Guth, Dean M PA2026-08-01 active