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

AC9QZ 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 AC9QZ's current licensee, walking backwards.

  1. AC9QLcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2017-07-11
  2. AC9PNcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2017-05-09
  3. AC9PKcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2017-01-28
  4. AC9NAcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2017-01-10
  5. AC9MCactive· E
    MCDONOUGH, JASON RILgranted 2019-04-16
  6. KC9UNCcancelled· E
    McDONOUGH, JASON RILgranted 2011-07-19cancelled 2019-04-16

Successor callsigns

Callsigns held now by people who previously held AC9QZ.

  1. N9WJPcancelled· E
    Piva, William JILgranted 2020-08-14cancelled 2024-07-23
← Back to AC9QZ License history →