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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KO0X callsign genealogy

Currently held by Montaneaux, Justin J

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 KO0X's current licensee, walking backwards.

  1. KJ6ZVUcancelled· E
    Montaneaux, Justin JCAgranted 2012-10-04cancelled 2013-12-03

Successor callsigns

Callsigns held now by people who previously held KO0X.

  1. W0CDWactive· E
    WEERTS, CHARLES DMNgranted 2021-08-09
  2. W0DTactive· E
    TALASKA, DON AIAgranted 2017-01-13

All historical holders

Every license row we've seen with the callsign KO0X, oldest first.

  • WEERTS, CHARLES D MN
    2011-04-19 → cancelled 2011-10-29
  • Montaneaux, Justin J CA
    2023-10-18 active
← Back to KO0X License history →