Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF0TB callsign genealogy
Currently held by Blocher, Thomas H
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 AF0TB's current licensee, walking backwards.
- Blocher, Thomas HNEgranted 2019-02-11cancelled 2020-10-16
Successor callsigns
Callsigns held now by people who previously held AF0TB.
No current licensee on record previously held this callsign.