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

KF9OA callsign genealogy

Currently held by Fairbairn, 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 KF9OA's current licensee, walking backwards.

  1. N9HFWactive· E
    Wischnat, Horst FFLgranted 2024-12-06
  2. KB3JMVcancelled· E
    Wischnat, Horst FPAgranted 2003-04-17cancelled 2004-11-26

Successor callsigns

Callsigns held now by people who previously held KF9OA.

  1. KE9Aactive· E
    Fairbairn, Robert JILgranted 2021-03-09
← Back to KF9OA License history →