Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4BOX callsign genealogy
Currently held by DE AZEVEDO, RICARDO S
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 W4BOX's current licensee, walking backwards.
- DE AZEVEDO, RICARDO SFLgranted 2021-02-12cancelled 2021-03-30
Successor callsigns
Callsigns held now by people who previously held W4BOX.
No current licensee on record previously held this callsign.