Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4VK callsign genealogy
Currently held by VALDES FEBLES, YUDIER
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 KO4VK's current licensee, walking backwards.
- VALDES FEBLES, YUDIERFLgranted 2022-11-17cancelled 2023-03-13
Successor callsigns
Callsigns held now by people who previously held KO4VK.
- FALL, LAWRENCE RFLgranted 1994-02-08cancelled 2006-02-09