Confidence: Medium · Source: FCC ULS · As of 2026-09-15
KR1V callsign genealogy
Currently held by ISOZAKI, MUNEHIRO
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 KR1V's current licensee, walking backwards.
- ISOZAKI, MUNEHIROCAgranted 2009-05-21cancelled 2010-05-11
Successor callsigns
Callsigns held now by people who previously held KR1V.
- CRITES, DANIEL JVAgranted 2017-01-10
All historical holders
Every license row we've seen with the callsign KR1V, oldest first.
- CRITES, DANIEL J VA2003-10-25 → cancelled 2007-02-13
- ISOZAKI, MUNEHIRO NV2020-02-13 active