Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA6USA callsign genealogy
Currently held by MULLER, THOMAS G
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 WA6USA's current licensee, walking backwards.
- Culbertson, William JCAgranted 2021-04-13cancelled 2022-12-28
Successor callsigns
Callsigns held now by people who previously held WA6USA.
- MULLER, THOMAS GCAgranted 2020-12-08cancelled 2021-09-28
All historical holders
Every license row we've seen with the callsign WA6USA, oldest first.
- MULLER, THOMAS G CA2017-12-18 → cancelled 2020-12-08
- Culbertson, William J CA2022-12-28 active