Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4RDF callsign genealogy
Currently held by DE FREITAS Sr., ROBERT 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 W4RDF's current licensee, walking backwards.
- DE FREITAS, ROBERT SVAgranted 1997-11-19cancelled 2000-02-25
Successor callsigns
Callsigns held now by people who previously held W4RDF.
No current licensee on record previously held this callsign.