Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3USA callsign genealogy
Currently held by O CONNOR, JOHN 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 N3USA's current licensee, walking backwards.
- Sepulveda, Angel HFLgranted 1997-07-09cancelled 2007-04-03
Successor callsigns
Callsigns held now by people who previously held N3USA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3USA, oldest first.
- O CONNOR, JOHN M MD1995-03-10 → cancelled 2007-03-13
- SEPULVEDA, ANGEL H FL2017-05-13 active