Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0IZI callsign genealogy
Currently held by SUBKA, RONALD C
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 W0IZI's current licensee, walking backwards.
- SUBKA, RONALD CCOgranted 2020-03-27cancelled 2026-03-17
Successor callsigns
Callsigns held now by people who previously held W0IZI.
No current licensee on record previously held this callsign.