Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NU4W callsign genealogy
Currently held by FRASER, DAVID R
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 NU4W's current licensee, walking backwards.
- PENCINGER, CHARLES JNCgranted 2014-08-15cancelled 2019-03-05
Successor callsigns
Callsigns held now by people who previously held NU4W.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NU4W, oldest first.
- FRASER, DAVID R KY2007-01-26 → cancelled 2019-02-13
- PENCINGER, CHARLES J NC2019-03-05 active