Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0CIS callsign genealogy
Currently held by KOCSIS, CHARLES F
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 K0CIS's current licensee, walking backwards.
- KOCSIS, CHARLES FKSgranted 2016-08-23cancelled 2017-11-18
Successor callsigns
Callsigns held now by people who previously held K0CIS.
No current licensee on record previously held this callsign.