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

K2YI callsign genealogy

Currently held by KOOPMANN, WILLIAM F

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 K2YI's current licensee, walking backwards.

  1. W3MJcancelled· E
    DAVIS, BRYANNYgranted 2025-03-14cancelled 2025-12-09
  2. N1BRYcancelled· E
    DAVIS, BRYANNYgranted 2024-01-27cancelled 2025-03-14
  3. KE2CLAcancelled· T
    DAVIS, BRYANNYgranted 2024-01-09cancelled 2024-01-27

Successor callsigns

Callsigns held now by people who previously held K2YI.

  1. K7QNactive· E
    HELMSTADTER, STEPHEN AAZgranted 2023-10-24
  2. K1YIactive· E
    FURMANICK, FRANCIS JMAgranted 2017-02-10

All historical holders

Every license row we've seen with the callsign K2YI, oldest first.

  • KOOPMANN, WILLIAM F NY
    2011-02-17 → cancelled 2023-05-09
  • HELMSTADTER, STEPHEN A AZ
    2023-06-23 → cancelled 2023-10-24
  • DAVIS, BRYAN NY
    2025-12-09 active
← Back to K2YI License history →