Confidence: Medium · Source: FCC ULS · As of 2026-09-11
KY4DOC callsign genealogy
Currently held by Collier, James D
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 KY4DOC's current licensee, walking backwards.
- Collier, James DKYgranted 2009-07-30cancelled 2009-09-01
Successor callsigns
Callsigns held now by people who previously held KY4DOC.
No current licensee on record previously held this callsign.