Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0TU callsign genealogy
Currently held by Bullock, Michael R
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 AB0TU's current licensee, walking backwards.
- Bullock, Michael RIAgranted 1996-05-29cancelled 2002-01-31
Successor callsigns
Callsigns held now by people who previously held AB0TU.
- Bullock, Michael RIAgranted 2017-03-23