Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4D callsign genealogy
Currently held by FITZNER, GARY R
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 KY4D's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KY4D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KY4D, oldest first.
- FITZNER, GARY R SC2005-02-23 → cancelled 2013-05-17
- ZINK, RALPH KY2025-04-15 active