Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4LUF callsign genealogy
Currently held by USIN FREIRE, LEONIDES
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 W4LUF's current licensee, walking backwards.
- USIN FREIRE, LEONIDESFLgranted 2020-02-27cancelled 2020-03-17
Successor callsigns
Callsigns held now by people who previously held W4LUF.
No current licensee on record previously held this callsign.