Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NB4L callsign genealogy
Currently held by GASTEAZORO, ALFREDO J
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 NB4L's current licensee, walking backwards.
- GASTEAZORO, ALFREDO Jcancelled 1997-12-17
Successor callsigns
Callsigns held now by people who previously held NB4L.
No current licensee on record previously held this callsign.