Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KR6CS callsign genealogy
Currently held by YAMAGATA, MASARU
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 KR6CS's current licensee, walking backwards.
- YAMAGATA, MASARUORgranted 1997-06-11cancelled 1999-09-30
Successor callsigns
Callsigns held now by people who previously held KR6CS.
- YAMAGATA, MASARUCAgranted 1997-06-11cancelled 2008-05-20