Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5KOZ callsign genealogy
Currently held by Steen, Billy D
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 W5KOZ's current licensee, walking backwards.
- Steen, Billy DMSgranted 2014-05-19cancelled 2015-05-08
Successor callsigns
Callsigns held now by people who previously held W5KOZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5KOZ, oldest first.
- GERBER, SIDNEY L OK1988-03-15 → cancelled 2000-03-16
- Steen, Billy D MS2025-04-11 active