Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9UYC callsign genealogy
Currently held by WITZKE SR, ARNOLD J
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 KC9UYC'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 KC9UYC.
- WITZKE SR, ARNOLD JILgranted 2021-10-23