Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO1F callsign genealogy
Currently held by CLARK, BRUCE 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 KO1F's current licensee, walking backwards.
- Fuller Jr, Oscar PCTgranted 2004-09-21cancelled 2007-11-16
Successor callsigns
Callsigns held now by people who previously held KO1F.
- CLARK, BRUCE AMEgranted 2017-09-27
All historical holders
Every license row we've seen with the callsign KO1F, oldest first.
- Fuller Jr, Oscar P CT2017-08-21 active
- CLARK, BRUCE A— → cancelled 1997-12-17