Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9RTZ callsign genealogy
Currently held by Columbus Amateur Radio Club
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 KC9RTZ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KC9RTZ.
- W9ALQactiveColumbus Amateur Radio ClubINgranted 2020-05-05