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

WU5F callsign genealogy

Currently held by MURKOT SR, RICHARD W

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 WU5F's current licensee, walking backwards.

  1. KF5EHEcancelled· E
    Vandenbrink, Mark LTXgranted 2019-09-28cancelled 2020-12-15

Successor callsigns

Callsigns held now by people who previously held WU5F.

  1. W8APcancelled· E
    MISCH, JAMES ROKgranted 2022-10-21cancelled 2025-08-12
  2. WA4DYNactive· E
    Brothers, Robert OTXgranted 2020-03-10
  3. WU5Gactive· E
    Marodis Jr, Steven GMSgranted 2018-11-20

All historical holders

Every license row we've seen with the callsign WU5F, oldest first.

  • MURKOT SR, RICHARD W TX
    1996-10-21 → cancelled 2008-10-22
  • Brothers, Robert O TX
    2009-11-10 → cancelled 2010-05-04
  • MISCH, JAMES R OK
    2012-06-12 → cancelled 2013-01-18
  • Marodis Jr, Steven G MS
    2015-02-07 → cancelled 2018-11-20
  • Vandenbrink, Mark L TX
    2020-12-15 active
← Back to WU5F License history →