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

AC9D callsign genealogy

Currently held by THORPE, RICHARD B

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 AC9D's current licensee, walking backwards.

  1. K9JDGactive· G
    Glover Jr, John DILgranted 2022-08-13
  2. KD9SSGcancelled· G
    Glover Jr, John DILgranted 2021-05-18cancelled 2022-08-13

Successor callsigns

Callsigns held now by people who previously held AC9D.

  1. K6CGactive· E
    THORPE, RICHARD BCAgranted 2020-05-19

All historical holders

Every license row we've seen with the callsign AC9D, oldest first.

  • ZAMBO JR, STEVE P IN
    1997-10-15 → cancelled 2009-10-16
  • THORPE, RICHARD B CA
    2010-01-09 → cancelled 2010-07-30
  • Goebel, Joseph D CO
    2022-08-03 active
← Back to AC9D License history →