Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0OZ callsign genealogy
Currently held by Speer, Larry B
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 AB0OZ's current licensee, walking backwards.
- Speer, Larry BMOgranted 2000-04-05cancelled 2000-09-29
Successor callsigns
Callsigns held now by people who previously held AB0OZ.
No current licensee on record previously held this callsign.