Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0WDO callsign genealogy
Currently held by OSBORN III, WILLIAM
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 K0WDO's current licensee, walking backwards.
- OSBORN III, WILLIAMKSgranted 2017-10-16cancelled 2017-11-03
Successor callsigns
Callsigns held now by people who previously held K0WDO.
- OSBORN III, WILLIAMKSgranted 2021-06-02