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

KF9C callsign genealogy

Currently held by KOSCIEWICZ, CHARLES 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 KF9C's current licensee, walking backwards.

  1. WE9Cactive· E
    KEMP, GENE DINgranted 2018-06-11
  2. W9GDKactive· E
    Keneipp, Glenn DILgranted 2020-12-14
  3. KF9XPcancelled· E
    Keneipp, Glenn DILgranted 2005-11-08cancelled 2011-03-04

Successor callsigns

Callsigns held now by people who previously held KF9C.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KF9C, oldest first.

  • KOSCIEWICZ, CHARLES A IL
    1992-08-11 → cancelled 2004-08-12
  • Craigin, Frederick H IN
    2025-12-16 active
← Back to KF9C License history →