Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AC0OI callsign genealogy
Currently held by Nelson, Dwight I
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 AC0OI's current licensee, walking backwards.
- Nelson, Dwight ICOgranted 2009-02-18cancelled 2009-03-18
Successor callsigns
Callsigns held now by people who previously held AC0OI.
- Nelson, Dwight ICOgranted 2019-02-20