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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KJ5OO callsign genealogy

Currently held by Graves, Rea F

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 KJ5OO's current licensee, walking backwards.

  1. K5RFGactive· G
    Guise, Ryan FLAgranted 2021-06-25
  2. KI5QCFcancelled· G
    Guise, Ryan FLAgranted 2021-06-01cancelled 2021-06-25

Successor callsigns

Callsigns held now by people who previously held KJ5OO.

  1. K2VRactive· E
    ISHIKAWA, HISATAKACAgranted 2020-04-25

All historical holders

Every license row we've seen with the callsign KJ5OO, oldest first.

  • ISHIKAWA, HISATAKA CA
    1993-07-27 → cancelled 2000-07-22
  • Graves, Rea F AR
    2016-08-23 active
← Back to KJ5OO License history →