Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KY4UL callsign genealogy
Currently held by Fiedler, Hans K
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 KY4UL's current licensee, walking backwards.
- Fiedler, Hans KKYgranted 2003-08-05cancelled 2007-04-03
Successor callsigns
Callsigns held now by people who previously held KY4UL.
No current licensee on record previously held this callsign.