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

K9OTR callsign genealogy

Currently held by Ullom, Scott M

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 K9OTR's current licensee, walking backwards.

  1. KR4BCRcancelled· T
    Ullom, Scott MALgranted 2025-02-05cancelled 2026-01-30

Successor callsigns

Callsigns held now by people who previously held K9OTR.

  1. W2TCactive· E
    Dwyer, Kory MNYgranted 2019-03-09
  2. WJ9Qactive· E
    DZIK, MARTIN JINgranted 2018-09-11

All historical holders

Every license row we've seen with the callsign K9OTR, oldest first.

  • DZIK, MARTIN J IN
    2007-10-05 → cancelled 2008-11-22
  • Dwyer, Kory M NY
    2014-01-14 → cancelled 2019-03-09
  • Ullom, Scott M FL
    2026-01-30 active
← Back to K9OTR License history →