Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB0OJ callsign genealogy
Currently held by Christianson, Jason A
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 AB0OJ's current licensee, walking backwards.
- CHRISTIANSON, JASON AMNgranted 1997-07-22cancelled 2000-07-27
Successor callsigns
Callsigns held now by people who previously held AB0OJ.
- Christianson, Jason AMNgranted 2020-09-02