Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DWT callsign genealogy
Currently held by RICHARDS, JOHN M
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 K4DWT's current licensee, walking backwards.
- HIRES, EDWARD DFLgranted 2007-05-24cancelled 2007-06-12
Successor callsigns
Callsigns held now by people who previously held K4DWT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DWT, oldest first.
- RICHARDS, JOHN M FL1995-01-26 → cancelled 2007-01-27
- HIRES, EDWARD D FL2017-03-24 active