Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF4TM callsign genealogy
Currently held by Buffington, Donald 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 AF4TM's current licensee, walking backwards.
- MILLER, THOMAS EFLgranted 2016-07-15cancelled 2016-08-09
Successor callsigns
Callsigns held now by people who previously held AF4TM.
- Buffington, Donald AFLgranted 2000-06-17cancelled 2012-06-19
All historical holders
Every license row we've seen with the callsign AF4TM, oldest first.
- Buffington, Donald A FL1999-07-26 → cancelled 2000-06-17
- MILLER, THOMAS E FL2016-08-09 active