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

W9OWL callsign genealogy

Currently held by Grose, Justin L

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 W9OWL's current licensee, walking backwards.

  1. K9HGBcancelled· G
    Grose, Justin LINgranted 2016-01-16cancelled 2019-06-28
  2. KC9LXWcancelled· G
    Grose, Justin LINgranted 2007-07-18cancelled 2016-01-16

Successor callsigns

Callsigns held now by people who previously held W9OWL.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W9OWL, oldest first.

  • Libott, Michael A CA
    2007-03-30 → cancelled 2019-04-02
  • Grose, Justin L IN
    2019-06-28 active
← Back to W9OWL License history →