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

AD7BL callsign genealogy

Currently held by Clauson, Mattie C

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 AD7BL's current licensee, walking backwards.

  1. KD7TYNcancelled· E
    Clauson, Mattie CORgranted 2002-07-16cancelled 2004-01-20
  2. KD7SDFcancelled· G
    Clauson, Mattie CORgranted 2002-07-16cancelled 2003-01-13

Successor callsigns

Callsigns held now by people who previously held AD7BL.

  1. AE7MCexpired· E
    CLAUSON, MATTIE COKgranted 2014-05-01cancelled 2026-03-06
← Back to AD7BL License history →