Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4AT callsign genealogy
Currently held by BRANCHFIELD, MICHAEL D
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 AI4AT's current licensee, walking backwards.
- BRANCHFIELD, MICHAEL DGAgranted 2024-04-30cancelled 2026-05-29
Successor callsigns
Callsigns held now by people who previously held AI4AT.
- Poole III, Johnnie GGAgranted 2023-05-20
All historical holders
Every license row we've seen with the callsign AI4AT, oldest first.
- Poole III, Johnnie G GA2013-07-20 → cancelled 2023-05-20
- BRANCHFIELD, MICHAEL D GA2026-05-29 active