Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4NPN callsign genealogy
Currently held by HARRIS, JOSEPH 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 N4NPN's current licensee, walking backwards.
- HARRIS, JOSEPH WALgranted 2026-05-27cancelled 2026-06-26
Successor callsigns
Callsigns held now by people who previously held N4NPN.
- CHRISTOPH, STEPHAN PNCgranted 2017-09-06
All historical holders
Every license row we've seen with the callsign N4NPN, oldest first.
- MITCHELL, DARYL S TN1996-04-02 → cancelled 2008-04-03
- CHRISTOPH, STEPHAN P NC2012-12-15 → cancelled 2017-09-06
- HARRIS, JOSEPH W AL2026-06-26 active