Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0OZJ callsign genealogy
Currently held by ROSS, HAROLD E
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 W0OZJ's current licensee, walking backwards.
- Brown, Dudley WCOgranted 2022-10-13cancelled 2022-11-04
Successor callsigns
Callsigns held now by people who previously held W0OZJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0OZJ, oldest first.
- ROSS, HAROLD E SD2007-12-21 → cancelled 2020-03-21
- Brown, Dudley W CO2022-11-04 active