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

KN9M callsign genealogy

Currently held by MASSALSKI, KAZIMIERZ

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 KN9M's current licensee, walking backwards.

  1. AC9HGcancelled· E
    MASSALSKI, KAZIMIERZILgranted 2014-01-31cancelled 2014-02-22

Successor callsigns

Callsigns held now by people who previously held KN9M.

  1. KX6Jactive· E
    WYLDE, STEVEN HCAgranted 2021-10-12

All historical holders

Every license row we've seen with the callsign KN9M, oldest first.

  • PARTRIDGE, EVERETT L IN
    1996-12-10 → cancelled 2008-12-11
  • WYLDE, STEVEN H CA
    2011-06-07 → cancelled 2012-01-06
  • MASSALSKI, KAZIMIERZ IL
    2025-02-01 active
← Back to KN9M License history →