Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5SUF callsign genealogy
Currently held by SIMPSON, DOUGLAS M
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 W5SUF's current licensee, walking backwards.
- WB5SUFcancelledcancelled 1998-04-28
Successor callsigns
Callsigns held now by people who previously held W5SUF.
- SIMPSON, DOUGLAS MTXgranted 2022-01-21