Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0LZR callsign genealogy
Currently held by DIRKS, WILLIAM H
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 W0LZR's current licensee, walking backwards.
- Madden, Wade BKSgranted 2016-04-05cancelled 2018-02-21
Successor callsigns
Callsigns held now by people who previously held W0LZR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0LZR, oldest first.
- DIRKS, WILLIAM H CO2004-10-26 → cancelled 2017-01-25
- Madden, Wade B KS2018-02-21 active