Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF0EVL callsign genealogy
Currently held by Warren, Mary C
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 KF0EVL's current licensee, walking backwards.
- Byerley, Douglas LMOgranted 2022-02-18cancelled 2024-03-19
Successor callsigns
Callsigns held now by people who previously held KF0EVL.
- Warren, Mary CMOgranted 2021-05-11
All historical holders
Every license row we've seen with the callsign KF0EVL, oldest first.
- Warren, Mary C MO2021-03-24 → cancelled 2021-05-11
- Byerley, Douglas L MO2024-03-19 active