Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4JW callsign genealogy
Currently held by WILLIAMS, JUSTIN
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 KD4JW's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD4JW.
No current licensee on record previously held this callsign.