Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1SEA callsign genealogy
Currently held by Carvalho, John O
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 N1SEA's current licensee, walking backwards.
- Ramaswami, Daniel LGAgranted 2014-05-02cancelled 2017-02-17
Successor callsigns
Callsigns held now by people who previously held N1SEA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1SEA, oldest first.
- Carvalho, John O RI2004-04-13 → cancelled 2016-07-08
- Ramaswami, Daniel L GA2017-02-17 active