Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4DEV callsign genealogy
Currently held by Bradley, Dev M
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 N4DEV's current licensee, walking backwards.
- NORTH, JACOBGAgranted 2021-09-02cancelled 2024-05-11
Successor callsigns
Callsigns held now by people who previously held N4DEV.
- Clark, John MTXgranted 2022-06-23
All historical holders
Every license row we've seen with the callsign N4DEV, oldest first.
- Bradley, Dev M CA2006-11-10 → cancelled 2018-11-14
- NORTH, JACOB GA2024-05-11 active