Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4ED callsign genealogy
Currently held by Cook, William C
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 KY4ED's current licensee, walking backwards.
- Cook, William CKYgranted 2016-03-17cancelled 2016-11-01
Successor callsigns
Callsigns held now by people who previously held KY4ED.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KY4ED, oldest first.
- HOOPER, EDWARD T FL1997-11-25 → cancelled 2009-11-26
- Cook, William C KY2016-11-01 active