Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC9SIU callsign genealogy
Currently held by Zink, Joseph 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 KC9SIU'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 KC9SIU.
- Zink, Joseph AWIgranted 2010-05-12cancelled 2010-07-20