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

NT9K callsign genealogy

Currently held by Crosier, Bill D

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 NT9K's current licensee, walking backwards.

  1. KF9QJcancelled· E
    Crosier, Bill DFLgranted 2003-05-02cancelled 2005-08-30
  2. KD4PZR
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held NT9K.

  1. K4NFcancelled· E
    BABCOCK, DENNIS GINgranted 2011-03-02cancelled 2018-07-13

All historical holders

Every license row we've seen with the callsign NT9K, oldest first.

  • BABCOCK, DENNIS G FL
    2000-11-09 → cancelled 2001-05-25
  • Crosier, Bill D FL
    2015-08-29 active
← Back to NT9K License history →