Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4DTB callsign genealogy
Currently held by Bradley, David T
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 N4DTB's current licensee, walking backwards.
- Bradley, David TTNgranted 2013-12-20cancelled 2015-10-03
Successor callsigns
Callsigns held now by people who previously held N4DTB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4DTB, oldest first.
- BROWN, LEE W NC1994-02-08 → cancelled 2006-02-09
- Bradley, David T TN2025-12-03 active