Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4IKR callsign genealogy
Currently held by Oak Ridge Amateur Radio Club
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 KI4IKR's current licensee, walking backwards.
- HIDA, TAKASHICAgranted 2025-07-26cancelled 2025-08-19
Successor callsigns
Callsigns held now by people who previously held KI4IKR.
- K4PJactiveOAK RIDGE AMATEUR RADIO CLUBTNgranted 2025-06-05
All historical holders
Every license row we've seen with the callsign KI4IKR, oldest first.
- Oak Ridge Amateur Radio Club TN2005-01-19 → cancelled 2005-06-03
- HIDA, TAKASHI CA2025-08-19 active