Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4HDT callsign genealogy
Currently held by PEDERSEN, JOHN 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 WB4HDT's current licensee, walking backwards.
- PEDERSEN, JOHN HILgranted 2025-06-06cancelled 2025-06-24
Successor callsigns
Callsigns held now by people who previously held WB4HDT.
No current licensee on record previously held this callsign.