Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9USO callsign genealogy
Currently held by Draeger, Mark S
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 W9USO's current licensee, walking backwards.
- Draeger, Mark SWIgranted 2022-04-06cancelled 2022-12-23
Successor callsigns
Callsigns held now by people who previously held W9USO.
No current licensee on record previously held this callsign.