Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR1Y callsign genealogy
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 KR1Y's current licensee, walking backwards.
- Ogura, ShuichiCAgranted 2011-05-13cancelled 2011-08-26
Successor callsigns
Callsigns held now by people who previously held KR1Y.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KR1Y, oldest first.
- Ogura, Shuichi CA2021-09-21 active
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