Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA5OSD callsign genealogy
Currently held by STEWART, WILLIAM L
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 WA5OSD's current licensee, walking backwards.
- AULTMAN, JOHN DMSgranted 2012-09-25cancelled 2012-10-16
Successor callsigns
Callsigns held now by people who previously held WA5OSD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA5OSD, oldest first.
- STEWART, WILLIAM L MS1993-06-22 → cancelled 2005-06-23
- AULTMAN, JOHN D MS2012-10-16 → cancelled 2024-11-19