Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4DH callsign genealogy
Currently held by HASELWOOD, DONALD E
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 W4DH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4DH.
No current licensee on record previously held this callsign.