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

K9DDR callsign genealogy

Currently held by Smith, Mark W

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 K9DDR's current licensee, walking backwards.

  1. KN6LULcancelled· T
    RIEDEL, DAVID DCAgranted 2020-10-29cancelled 2020-11-17

Successor callsigns

Callsigns held now by people who previously held K9DDR.

  1. AC8MSexpired· E
    Smith, Mark WMIgranted 2010-07-20cancelled 2022-07-21

All historical holders

Every license row we've seen with the callsign K9DDR, oldest first.

  • GALLATIN, ROBERT E IN
    1988-02-02 → cancelled 2000-02-03
  • Smith, Mark W MI
    2010-07-20 → cancelled 2012-09-21
  • RIEDEL, DAVID D AZ
    2020-11-17 active
← Back to K9DDR License history →