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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

W9JK callsign genealogy

Currently held by Klusman, James E

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 W9JK's current licensee, walking backwards.

  1. W9MBactive· E
    BOILEAU, MICHAEL SWIgranted 2021-07-27
  2. N9NBNactive· T
    BOILEAU, NATHAN DWIgranted 2024-04-11
  3. KC9WJVcancelled· T
    BOILEAU, NATHAN DWIgranted 2012-08-07cancelled 2013-07-27

Successor callsigns

Callsigns held now by people who previously held W9JK.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W9JK, oldest first.

  • KRAUSE, JACK C WI
    2000-03-07 → cancelled 2007-05-31
  • Klusman, James E IN
    2019-03-26 active
← Back to W9JK License history →