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Confidence: Medium · Source: FCC ULS · As of 2026-09-10

K9DA callsign genealogy

Currently held by AMBROSE, DONN 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 K9DA's current licensee, walking backwards.

  1. KN9Sactive· E
    Schrishuhn, Kenneth LILgranted 2023-01-04
  2. KA9CCAcancelled· E
    Schrishuhn, Kenneth LILgranted 1999-03-31cancelled 2003-01-25

Successor callsigns

Callsigns held now by people who previously held K9DA.

  1. W4DAAexpired· E
    COX, WILLIAM MVAgranted 1997-05-20cancelled 2009-05-21
← Back to K9DA License history →