Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB1AF callsign genealogy
Currently held by CLAY, JAMES S
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 AB1AF's current licensee, walking backwards.
- CLAY, JAMES SMDgranted 2021-04-12cancelled 2025-01-31
Successor callsigns
Callsigns held now by people who previously held AB1AF.
- Tinkler, MarcNHgranted 2023-10-19
All historical holders
Every license row we've seen with the callsign AB1AF, oldest first.
- Tinkler, Marc C MA2002-04-11 → cancelled 2002-05-18
- CLAY, JAMES S MD2025-01-31 active