Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NJ4O callsign genealogy
Currently held by NEUPERT, LARRY D
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 NJ4O's current licensee, walking backwards.
- NEUPERT, LARRY DSCgranted 1998-09-23cancelled 2007-03-20
Successor callsigns
Callsigns held now by people who previously held NJ4O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NJ4O, oldest first.
- RANDALL, EVERETT Z FL1995-11-28 → cancelled 2000-07-14
- NEUPERT, LARRY D SC2016-12-28 active