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

NZ6X callsign genealogy

Currently held by Kackert, Paul T

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 NZ6X's current licensee, walking backwards.

  1. KN6MXRcancelled· E
    Kackert, Paul TCAgranted 2021-01-14cancelled 2021-04-06

Successor callsigns

Callsigns held now by people who previously held NZ6X.

  1. AA2SEexpired· E
    MATHIS, ROBERT JNJgranted 2014-03-22cancelled 2026-05-27

All historical holders

Every license row we've seen with the callsign NZ6X, oldest first.

  • SANTA ROSA MIDDLE SCHOOL ARC CA
    2009-03-18 → cancelled 2021-03-19
  • Kackert, Paul T CA
    2021-04-06 active