Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4DBY callsign genealogy
Currently held by KENTUCKY DERBY HERITAGE AMATEUR RADIO CLUB
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 KY4DBY's current licensee, walking backwards.
- KM4PYEcancelledKENTUCKY DERBY HERITAGE AMATEUR RADIO CLUBKYgranted 2015-12-21cancelled 2016-01-09
Successor callsigns
Callsigns held now by people who previously held KY4DBY.
No current licensee on record previously held this callsign.