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

AB9ZH 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 AB9ZH's current licensee, walking backwards.

  1. AB9XOcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-06-21
  2. AB9XKcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-09-24
  3. AB9XHcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-09-10
  4. AB9WPcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-09-08
  5. AB9WLcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-05-06
  6. AB9WEcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-04-20
  7. AB9WAcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-04-06
  8. AB9VZcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-03-23
  9. AB9VUcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-03-16
  10. AB9VKcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-03-09

Successor callsigns

Callsigns held now by people who previously held AB9ZH.

  1. AB9ZJcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-07-06
← Back to AB9ZH License history →