Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0OSI callsign genealogy
Currently held by Falk, Kenneth J
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 W0OSI's current licensee, walking backwards.
- Flinders, Ronald GUTgranted 2018-03-23cancelled 2019-11-02
Successor callsigns
Callsigns held now by people who previously held W0OSI.
- Falk, Kenneth JWAgranted 2017-01-24cancelled 2017-05-31
All historical holders
Every license row we've seen with the callsign W0OSI, oldest first.
- LUTHERAN JR, GEORGE MO1990-03-13 → cancelled 2002-03-14
- Falk, Kenneth J WA2013-03-15 → cancelled 2017-01-24
- Flinders, Ronald G UT2019-11-02 active