Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD0HI callsign genealogy
Currently held by RUZICKA, JOE G
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 KD0HI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD0HI.
No current licensee on record previously held this callsign.