Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4JNN callsign genealogy
Currently held by Nelson, Jason W
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 N4JNN's current licensee, walking backwards.
- Nelson, Jason WGAgranted 2020-07-15cancelled 2025-12-09
Successor callsigns
Callsigns held now by people who previously held N4JNN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4JNN, oldest first.
- PFIZENMAIER, CHRIS R WV1991-04-09 → cancelled 2003-04-10
- Nelson, Jason W GA2025-12-09 active