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

KC9SXO callsign genealogy

Currently held by Feuerman, Jacob D

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 KC9SXO's current licensee, walking backwards.

  1. KM6USFcancelled· T
    Feuerman, Jacob DCAgranted 2018-07-23cancelled 2018-08-10

Successor callsigns

Callsigns held now by people who previously held KC9SXO.

  1. K9AOVactive· T
    Feuerman, Jacob DORgranted 2018-09-15
  2. K9WKcancelled· E
    PARNELL, ALLEN WWIgranted 2010-12-21cancelled 2017-10-03

All historical holders

Every license row we've seen with the callsign KC9SXO, oldest first.

  • Parnell, Allen W WI
    2010-08-02 → cancelled 2010-12-21
  • Feuerman, Jacob D CA
    2018-08-10 → cancelled 2018-09-15
← Back to KC9SXO License history →