Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO2THF callsign genealogy
Currently held by DRONEN JR, WILLIAM A
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 KO2THF's current licensee, walking backwards.
- DRONEN JR, WILLIAM AVAgranted 2024-03-29cancelled 2024-05-31
Successor callsigns
Callsigns held now by people who previously held KO2THF.
- DRONEN JR, WILLIAM AVAgranted 2026-07-07