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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

AA1UN callsign genealogy

Currently held by HORN, RANDAL 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 AA1UN's current licensee, walking backwards.

  1. WT0Aactive· E
    BURKHARDT, JOHN EMNgranted 2024-05-29
  2. KF0AEcancelled· E
    BURKHARDT, JOHN EMNgranted 2023-06-27cancelled 2024-05-29
  3. AE0UQcancelled· E
    BURKHARDT, JOHN EMNgranted 2023-01-31cancelled 2023-06-27
  4. KF0LJScancelled· E
    BURKHARDT, JOHN EMNgranted 2023-01-31cancelled 2023-05-15

Successor callsigns

Callsigns held now by people who previously held AA1UN.

  1. N1SPactive· E
    HORN, RANDAL JVTgranted 2023-01-31
← Back to AA1UN License history →