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

KI0K callsign genealogy

Currently held by REEVES, MARTIN K

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 KI0K's current licensee, walking backwards.

  1. AC0QTcancelled· E
    CHRISTENSON, DEREK AIAgranted 2006-12-07cancelled 2009-12-29
  2. KC0ZBScancelled· E
    CHRISTENSON, DEREK AIAgranted 2006-12-07cancelled 2009-12-11

Successor callsigns

Callsigns held now by people who previously held KI0K.

  1. AB5Lactive· E
    REEVES, MARTIN KTXgranted 2017-05-23

All historical holders

Every license row we've seen with the callsign KI0K, oldest first.

  • REEVES, MARTIN K TX
    1999-06-24 → cancelled 2007-07-13
  • CHRISTENSON, DEREK A IA
    2019-10-17 active
← Back to KI0K License history →