Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WT4WT callsign genealogy
Currently held by BARRETO, SERGIO 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 WT4WT's current licensee, walking backwards.
- BARRETO, SERGIO Rcancelled 1998-12-17
Successor callsigns
Callsigns held now by people who previously held WT4WT.
No current licensee on record previously held this callsign.