Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF5TT callsign genealogy
Currently held by Blum, John E
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 AF5TT's current licensee, walking backwards.
- Tarman, Thomas DNMgranted 2017-01-04cancelled 2025-01-14
- KA9HKYno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AF5TT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AF5TT, oldest first.
- Blum, John E OK2012-08-02 → cancelled 2024-08-03
- Tarman, Thomas D NM2025-01-14 active