Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N2OUN callsign genealogy
Currently held by PAPADOPOULOS, JOHN S
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 N2OUN's current licensee, walking backwards.
- Ellithorp, Christopher SNYgranted 2016-07-15cancelled 2017-07-04
Successor callsigns
Callsigns held now by people who previously held N2OUN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N2OUN, oldest first.
- PAPADOPOULOS, JOHN S NJ1991-12-10 → cancelled 2003-12-11
- Ellithorp, Christopher S NY2017-07-04 active