Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF0XS callsign genealogy
Currently held by COOK, DONALD 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 KF0XS's current licensee, walking backwards.
- Bothur, Lydia GSCgranted 2020-12-21cancelled 2022-05-06
Successor callsigns
Callsigns held now by people who previously held KF0XS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF0XS, oldest first.
- COOK, DONALD R NE1992-03-31 → cancelled 2004-04-01
- Bothur, Lydia G SC2022-05-06 active