Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4EDN callsign genealogy
Currently held by HEYBRUCK, WILLIAM F
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 W4EDN's current licensee, walking backwards.
- HEYBRUCK, WILLIAM FNCgranted 2016-04-08cancelled 2017-01-31
Successor callsigns
Callsigns held now by people who previously held W4EDN.
- Nigro, Eric DNJgranted 2019-01-31
All historical holders
Every license row we've seen with the callsign W4EDN, oldest first.
- Nigro, Eric D NJ2002-04-30 → cancelled 2009-03-24
- HEYBRUCK, WILLIAM F NC2017-01-31 active