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

AB9ZU 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 AB9ZU's current licensee, walking backwards.

  1. AB9ZTcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-08-06
  2. AB9ZQcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-08-05
  3. AB9ZPcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-07-30
  4. AB9ZOcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-07-23
  5. AB9ZNcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-07-20
  6. AB9ZMcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-07-19
  7. AB9ZLcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-07-12
  8. AB9ZKcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-07-07
  9. AB9ZJcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-07-06
  10. AB9ZHcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-06-28

Successor callsigns

Callsigns held now by people who previously held AB9ZU.

  1. AB9ZVcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2011-08-12
← Back to AB9ZU License history →