Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4ETN callsign genealogy
Currently held by COOK, DOUGLAS G
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 KD4ETN's current licensee, walking backwards.
- Cook, Douglas GKYgranted 2019-08-10cancelled 2021-06-04
Successor callsigns
Callsigns held now by people who previously held KD4ETN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4ETN, oldest first.
- COOK, DOUGLAS G KY1991-09-10 → cancelled 2003-09-11
- Cook, Douglas G KY2021-06-04 active