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

N9KC callsign genealogy

Currently held by Kostera IV, Thomas A

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 N9KC's current licensee, walking backwards.

  1. AC2MFcancelled· E
    Wang, Kevin LNYgranted 2013-12-05cancelled 2017-02-24

Successor callsigns

Callsigns held now by people who previously held N9KC.

  1. W4KMactive· E
    Kostera IV, Thomas ATNgranted 2025-03-18
  2. KT1Ractive· E
    ECKERT, LOUIS AWVgranted 2021-06-25

All historical holders

Every license row we've seen with the callsign N9KC, oldest first.

  • ECKERT, LOUIS A ME
    2007-10-30 → cancelled 2011-08-12
  • Kostera IV, Thomas A GA
    2013-09-10 → cancelled 2015-02-03
  • Wang, Kevin L NY
    2017-02-24 active
← Back to N9KC License history →