Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO4WIN callsign genealogy
Currently held by Darbyshire, David L
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 KO4WIN's current licensee, walking backwards.
- Darbyshire, David LFLgranted 2021-03-17cancelled 2021-05-11
Successor callsigns
Callsigns held now by people who previously held KO4WIN.
No current licensee on record previously held this callsign.