Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WU9P callsign genealogy
Currently held by BUTLER, 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 WU9P's current licensee, walking backwards.
- MATTERN, CHARLES RVAgranted 2015-11-12cancelled 2016-04-08
Successor callsigns
Callsigns held now by people who previously held WU9P.
- BRANT, STEVEN BMEgranted 2014-03-18cancelled 2026-03-19
All historical holders
Every license row we've seen with the callsign WU9P, oldest first.
- BUTLER, WILLIAM J IL1990-08-14 → cancelled 2002-08-15
- BRANT, STEVEN B ME2011-07-26 → cancelled 2014-03-18
- MATTERN, CHARLES R VA2026-02-14 active