Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD3J callsign genealogy
Currently held by O HORO, JAMES F
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 WD3J's current licensee, walking backwards.
- Wittman, Steven ATXgranted 2024-07-10cancelled 2026-08-25
Successor callsigns
Callsigns held now by people who previously held WD3J.
- Johse Jr, Douglas WTXgranted 2024-07-30
All historical holders
Every license row we've seen with the callsign WD3J, oldest first.
- O HORO, JAMES F FL2010-07-13 → cancelled 2022-08-19
- Johse Jr, Douglas W TX2022-12-24 → cancelled 2024-07-30
- Wittman, Steven A TX2026-08-25 active