Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ0N callsign genealogy
Currently held by STEEN, ROALD
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 AJ0N's current licensee, walking backwards.
- Crandall, Jonathan CIAgranted 2004-08-17cancelled 2006-01-07
Successor callsigns
Callsigns held now by people who previously held AJ0N.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AJ0N, oldest first.
- STEEN, ROALD MN1993-02-02 → cancelled 2005-02-03
- Crandall, Jonathan C IA2016-02-11 active