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

W5YO callsign genealogy

Currently held by O'Connell, William R

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 W5YO's current licensee, walking backwards.

  1. KE5XXcancelled
    Razorback Contest ClubARgranted 2017-07-21cancelled 2019-07-02
  2. W5MMMactive· G
    MURPHEY, MONICA MSCgranted 2020-02-14
  3. KN4SGGcancelled· G
    MURPHEY, MONICA MSCgranted 2019-02-11cancelled 2020-02-14

Successor callsigns

Callsigns held now by people who previously held W5YO.

  1. K5PLZcancelled· E
    O'Connell, William RTXgranted 2008-02-29cancelled 2008-04-01

All historical holders

Every license row we've seen with the callsign W5YO, oldest first.

  • SULLIVAN, ROBERT D CA
    1995-09-26 → cancelled 2002-01-03
  • O'Connell, William R TX
    2004-05-04 → cancelled 2008-02-29
  • O'Connell, William R TX
    2008-04-01 → cancelled 2017-06-13
  • Razorback Contest Club AR
    2019-07-02 active
← Back to W5YO License history →