Confidence: Medium · Source: FCC ULS · As of 2026-09-10
W4EXT callsign genealogy
Currently held by SEWARD II, WILLIAM 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 W4EXT's current licensee, walking backwards.
- SEWARD II, WILLIAM JNCgranted 2012-01-24cancelled 2019-05-10
Successor callsigns
Callsigns held now by people who previously held W4EXT.
No current licensee on record previously held this callsign.