Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NR0J callsign genealogy
Currently held by FERGUSON, WILLIAM 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 NR0J's current licensee, walking backwards.
- Coultas, JohnCAgranted 2001-02-01cancelled 2003-02-21
Successor callsigns
Callsigns held now by people who previously held NR0J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NR0J, oldest first.
- FERGUSON, WILLIAM A CA1998-02-05 → cancelled 2001-01-29
- Coultas, John TX2022-12-29 active