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

NA9O callsign genealogy

Currently held by Wisconsin DX Club

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 NA9O's current licensee, walking backwards.

  1. KD9UCLcancelled
    INDIANA CONTEST GROUPINgranted 2022-01-06cancelled 2022-02-05

Successor callsigns

Callsigns held now by people who previously held NA9O.

  1. K8VOcancelled· E
    MCINTOSH, BRIAN JINgranted 2020-01-17cancelled 2020-05-01
  2. K8HAactive· E
    KEENER, MICHAEL KOHgranted 2018-01-09

All historical holders

Every license row we've seen with the callsign NA9O, oldest first.

  • Wisconsin DX Club WI
    2007-06-01 → cancelled 2019-06-04
  • MCINTOSH, BRIAN J IN
    2019-08-16 → cancelled 2020-01-17
  • INDIANA CONTEST GROUP IN
    2022-02-05 active
  • KEENER, MICHAEL K
    — → cancelled 1998-03-18
← Back to NA9O License history →