Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9CDZ callsign genealogy
Currently held by Radtke, Eugene A
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 KC9CDZ's current licensee, walking backwards.
- Radtke, Eugene AWIgranted 2000-02-23cancelled 2002-07-24
Successor callsigns
Callsigns held now by people who previously held KC9CDZ.
- Radtke, Eugene AWIgranted 2019-12-04