Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC9CZU callsign genealogy
Currently held by Bloomington High School South 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 KC9CZU'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 KC9CZU.
- K9SOUactiveBloomington High School South Amateur Radio ClubINgranted 2024-04-17