Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9RCZ callsign genealogy
Currently held by KORCZ, TOMASZ
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 K9RCZ's current licensee, walking backwards.
- Korcz, TomaszILgranted 2012-03-30cancelled 2012-04-27
Successor callsigns
Callsigns held now by people who previously held K9RCZ.
No current licensee on record previously held this callsign.