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

ND9X callsign genealogy

Currently held by KOSCIK, FRANK 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 ND9X's current licensee, walking backwards.

  1. W9PRAcancelled· E
    Thornton, RobertGAgranted 2021-07-12cancelled 2022-07-23
  2. KO4PXPcancelled· E
    Thornton, RobertGAgranted 2021-04-30cancelled 2021-07-12

Successor callsigns

Callsigns held now by people who previously held ND9X.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign ND9X, oldest first.

  • KOSCIK, FRANK J IL
    1995-02-01 → cancelled 2007-02-02
  • HINDS, MICHAEL P IN
    2017-04-19 active
← Back to ND9X License history →