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

KO9R callsign genealogy

Currently held by MILLER JR, ROBERT 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 KO9R's current licensee, walking backwards.

  1. KD0KOLcancelled· E
    Smith, Kenneth WMOgranted 2010-03-03cancelled 2012-04-03

Successor callsigns

Callsigns held now by people who previously held KO9R.

  1. N9MUactive· E
    MILLER JR, ROBERT JILgranted 2017-07-25
  2. N9VRactive· E
    HUMMER, WILLIAM DINgranted 2014-12-18

All historical holders

Every license row we've seen with the callsign KO9R, oldest first.

  • HUMMER, WILLIAM D IN
    2004-01-31 → cancelled 2005-03-15
  • Smith, Kenneth W MO
    2022-01-12 active
  • MILLER JR, ROBERT J
    — → cancelled 1997-10-09
← Back to KO9R License history →