Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW4DTW callsign genealogy
Currently held by Williams, Don
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 KW4DTW's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KW4DTW.
No current licensee on record previously held this callsign.