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

KD9XM callsign genealogy

Currently held by Ryan, Patrick L

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 KD9XM's current licensee, walking backwards.

  1. N9ZUactive· E
    Osorio, Cesar AFLgranted 2021-07-28
  2. NZ9Lexpired· E
    KOORS, MARK AINgranted 2013-11-15cancelled 2026-03-07
  3. N9PWIcancelled· E
    KOORS, MARK AINgranted 2012-04-09cancelled 2013-11-15

Successor callsigns

Callsigns held now by people who previously held KD9XM.

No current licensee on record previously held this callsign.

← Back to KD9XM License history →