Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0SYS callsign genealogy
Currently held by JOHNSON, RICHARD C
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 KC0SYS's current licensee, walking backwards.
- JOHNSON, RICHARD CKSgranted 1999-04-09cancelled 2004-08-21
Successor callsigns
Callsigns held now by people who previously held KC0SYS.
- JOHNSON, RICHARD CKSgranted 2016-09-13