Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4DUT callsign genealogy
Currently held by DUTRA, THOMAS A
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 W4DUT's current licensee, walking backwards.
- DUTRA, THOMAS AGAgranted 2010-08-02cancelled 2010-09-14
Successor callsigns
Callsigns held now by people who previously held W4DUT.
No current licensee on record previously held this callsign.