Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4WHD callsign genealogy
Currently held by DOUGLAS, WILLIAM H
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 WB4WHD's current licensee, walking backwards.
- DOUGLAS, WILLIAM HGAgranted 2004-02-27cancelled 2009-05-09
Successor callsigns
Callsigns held now by people who previously held WB4WHD.
No current licensee on record previously held this callsign.