Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1JDB callsign genealogy
Currently held by Barros, Joseph D
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 N1JDB's current licensee, walking backwards.
- Barros, Joseph DCTgranted 2013-11-12cancelled 2013-12-06
Successor callsigns
Callsigns held now by people who previously held N1JDB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1JDB, oldest first.
- MORTIMER, WILLIAM J UT2001-04-17 → cancelled 2013-05-29
- Barros, Joseph D CT2013-12-06 → cancelled 2026-03-07