Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4WDC callsign genealogy
Currently held by FINGAR, JUSTIN 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 N4WDC's current licensee, walking backwards.
- COLLINS, WILLIAM DVAgranted 2001-03-27cancelled 2006-08-05
Successor callsigns
Callsigns held now by people who previously held N4WDC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4WDC, oldest first.
- FINGAR, JUSTIN D AL1989-06-20 → cancelled 2001-06-21
- COLLINS, WILLIAM D SC2026-07-25 active