Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NV4X callsign genealogy
Currently held by TRIANGLE CONTEST CLUB
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 NV4X's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held NV4X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NV4X, oldest first.
- TRIANGLE CONTEST CLUB NC2007-01-05 → cancelled 2019-03-28
- WESTERBERG, GIRARD M KY2019-04-16 active