Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1OIO callsign genealogy
Currently held by O CONNOR, JAMES 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 N1OIO's current licensee, walking backwards.
- O CONNOR, JAMES MMAgranted 2003-04-23cancelled 2005-02-01
Successor callsigns
Callsigns held now by people who previously held N1OIO.
- O CONNOR, JAMES MMAgranted 2003-04-23cancelled 2005-02-01
All historical holders
Every license row we've seen with the callsign N1OIO, oldest first.
- O CONNOR, JAMES M MA1993-02-16 → cancelled 2003-04-23
- O CONNOR, JAMES M MA2026-03-04 active