Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4DJB callsign genealogy
Currently held by Bowman, David J
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 WB4DJB's current licensee, walking backwards.
- Bowman, David JALgranted 2023-03-18cancelled 2025-12-19
Successor callsigns
Callsigns held now by people who previously held WB4DJB.
- Bowman, David JALgranted 2023-03-18cancelled 2025-12-19
All historical holders
Every license row we've seen with the callsign WB4DJB, oldest first.
- Bowman, David J AL2022-12-31 → cancelled 2023-03-18
- Bowman, David J AL2025-12-19 active