Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0SRT callsign genealogy
Currently held by Clark, Brian R
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 K0SRT's current licensee, walking backwards.
- Clark, Brian RIAgranted 2016-11-07cancelled 2019-11-02
Successor callsigns
Callsigns held now by people who previously held K0SRT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0SRT, oldest first.
- WOODS, CLEO MO1987-09-01 → cancelled 1999-09-02
- Clark, Brian R IA2019-11-02 active