Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4FUS callsign genealogy
Currently held by URRUTIA, FERNANDO
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 K4FUS's current licensee, walking backwards.
- URRUTIA, FERNANDOFLgranted 2009-04-23cancelled 2009-09-19
Successor callsigns
Callsigns held now by people who previously held K4FUS.
No current licensee on record previously held this callsign.