Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3OXU callsign genealogy
Currently held by MARKEY, JONATHAN A
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 N3OXU's current licensee, walking backwards.
- NICHOLSON, KEITH BFLgranted 2010-12-06cancelled 2011-05-20
Successor callsigns
Callsigns held now by people who previously held N3OXU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3OXU, oldest first.
- MARKEY, JONATHAN A PA1993-05-04 → cancelled 2005-05-05
- NICHOLSON, KEITH B FL2021-05-18 active