Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB2SD callsign genealogy
Currently held by CARVALHO, 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 AB2SD's current licensee, walking backwards.
- CARVALHO, RICARDO SNJgranted 1995-10-17cancelled 2004-04-07
Successor callsigns
Callsigns held now by people who previously held AB2SD.
No current licensee on record previously held this callsign.