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

AB9SD 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 AB9SD's current licensee, walking backwards.

  1. AB9SCcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2008-08-28
  2. AB9SBcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2008-08-27
  3. AB9SAcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2008-08-26
  4. AB9QMcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2008-08-21
  5. AB9QLcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2008-02-08
  6. AB9QKcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2008-02-07
  7. AB9QIcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2008-02-06
  8. N9WJPactive· E
    Piva, William JILgranted 2024-08-16
  9. KB9WSDcancelled· E
    Piva, William JILgranted 2024-07-23cancelled 2024-08-16

Successor callsigns

Callsigns held now by people who previously held AB9SD.

  1. AB9VIcancelled· E
    Piva, William JILgranted 2008-01-05cancelled 2010-01-20
← Back to AB9SD License history →