Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9UR callsign genealogy
Currently held by DUNKER, JOHN P
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 W9UR's current licensee, walking backwards.
- SCHWARTZMILLER, CARL BWIgranted 2005-07-26cancelled 2012-09-14
Successor callsigns
Callsigns held now by people who previously held W9UR.
- DUNKER, JOHN PINgranted 2010-08-24cancelled 2017-06-27
All historical holders
Every license row we've seen with the callsign W9UR, oldest first.
- DUNKER, JOHN P KY2006-10-05 → cancelled 2010-08-24
- SCHWARTZMILLER, CARL B WI2022-06-23 active