Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC2DUX callsign genealogy
Currently held by SCHLOSSER, WILLIAM J
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 KC2DUX's current licensee, walking backwards.
- Hamann Jr, John WNJgranted 2005-03-22cancelled 2005-04-09
Successor callsigns
Callsigns held now by people who previously held KC2DUX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC2DUX, oldest first.
- SCHLOSSER, WILLIAM J NY1998-07-06 → cancelled 2001-09-24
- Hamann Jr, John W NJ2025-04-15 active