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

AC1OI callsign genealogy

Currently held by Beare, Donald T

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 AC1OI's current licensee, walking backwards.

  1. AC1OEcancelled· E
    Beare, Donald TCTgranted 2022-05-24cancelled 2023-01-18
  2. K5UKcancelled· E
    Whittaker, Jim DOKgranted 2025-01-18cancelled 2025-05-17
  3. KI5JIMactive· E
    Whittaker, Jim DOKgranted 2025-05-17

Successor callsigns

Callsigns held now by people who previously held AC1OI.

  1. AI5QHcancelled· E
    Beare, Donald TMAgranted 2022-05-24cancelled 2024-10-08
← Back to AC1OI License history →