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

AC9KN callsign genealogy

Currently held by Piva, William J

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 AC9KN's current licensee, walking backwards.

  1. AC9KLcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2015-01-16
  2. AC9JJactive· E
    Jacobs, Jeffrey AWIgranted 2019-02-20
  3. KD9KFRcancelled· E
    Jacobs, Jeffrey AWIgranted 2018-02-15cancelled 2019-02-20

Successor callsigns

Callsigns held now by people who previously held AC9KN.

  1. AC9LDcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2015-07-28
← Back to AC9KN License history →