Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6SDX callsign genealogy
Currently held by Schupp, Bruce B
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 W6SDX's current licensee, walking backwards.
- West, Thomas DFLgranted 2012-03-20cancelled 2017-12-09
Successor callsigns
Callsigns held now by people who previously held W6SDX.
- Schupp, Bruce BFLgranted 2023-05-16
All historical holders
Every license row we've seen with the callsign W6SDX, oldest first.
- Schupp, Bruce B FL2004-03-13 → cancelled 2013-07-06
- West, Thomas D FL2017-12-09 active