Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6THR callsign genealogy
Currently held by Throup, Adrian
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 W6THR's current licensee, walking backwards.
- Throup, AdrianCAgranted 2016-07-13cancelled 2019-12-10
Successor callsigns
Callsigns held now by people who previously held W6THR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6THR, oldest first.
- CLASEN, WILLIAM E CA1996-12-03 → cancelled 2008-12-04
- Throup, Adrian CA2019-12-10 active