Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0RRK callsign genealogy
Currently held by Pierce, Clayton L
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 W0RRK's current licensee, walking backwards.
- Pierce, Clayton LMOgranted 2024-10-16cancelled 2024-11-05
Successor callsigns
Callsigns held now by people who previously held W0RRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0RRK, oldest first.
- BYERS, HARRY E MN1987-09-22 → cancelled 1999-09-23
- Pierce, Clayton L MO2024-11-05 active