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

W0SC callsign genealogy

Currently held by UBL, MICHAEL P

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 W0SC's current licensee, walking backwards.

  1. KZ4KEcancelled· E
    Ubl, Michael PFLgranted 2024-08-03cancelled 2024-09-10

Successor callsigns

Callsigns held now by people who previously held W0SC.

  1. NS0Mcancelled· E
    Keefe, WayneSDgranted 2024-05-24cancelled 2024-08-06
  2. W0GFcancelled· E
    RUSK, JAMES WMOgranted 2022-03-12cancelled 2025-03-11

All historical holders

Every license row we've seen with the callsign W0SC, oldest first.

  • SWAYZE SR, ALLAN W KS
    1997-03-13 → cancelled 2001-01-16
  • UBL, MICHAEL P FL
    2003-03-11 → cancelled 2015-03-12
  • RUSK, JAMES W MO
    2015-03-31 → cancelled 2022-03-12
  • Keefe, Wayne SD
    2024-04-02 → cancelled 2024-05-24
  • Ubl, Michael P FL
    2024-09-10 active
← Back to W0SC License history →