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

AA9ZM callsign genealogy

Currently held by Messerly, Mark 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 AA9ZM's current licensee, walking backwards.

  1. WM9JMcancelled· E
    Messerly, Mark JILgranted 2008-06-03cancelled 2008-07-15

Successor callsigns

Callsigns held now by people who previously held AA9ZM.

  1. KX4LDactive· E
    Messerly, Mark JFLgranted 2018-05-16
  2. WM9JMcancelled· E
    Messerly, Mark JILgranted 2008-06-03cancelled 2008-07-15

All historical holders

Every license row we've seen with the callsign AA9ZM, oldest first.

  • Messerly, Mark J IL
    2002-07-06 → cancelled 2008-06-03
  • Messerly, Mark J FL
    2008-07-15 → cancelled 2018-05-16
← Back to AA9ZM License history →