Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NJ4DU callsign genealogy
Currently held by Charleston Amateur Radio Society
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 NJ4DU's current licensee, walking backwards.
- KG4LYHcancelledCharleston Amateur Radio SocietySCgranted 2001-02-21cancelled 2001-03-20
Successor callsigns
Callsigns held now by people who previously held NJ4DU.
No current licensee on record previously held this callsign.