Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA1BA callsign genealogy
Currently held by BABB, JAMES F
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 AA1BA's current licensee, walking backwards.
- BABB, JAMES FMAgranted 2022-08-03cancelled 2023-06-22
Successor callsigns
Callsigns held now by people who previously held AA1BA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA1BA, oldest first.
- COLQUHOUN, WILLIAM B MA1992-02-25 → cancelled 2004-02-26
- BABB, JAMES F MA2023-06-22 active