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

W4MU callsign genealogy

Currently held by FORSTER, DONALD E

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 W4MU's current licensee, walking backwards.

  1. K4WRKcancelled· E
    KELLEY, WILLIAM RVAgranted 2011-10-26cancelled 2019-10-18
  2. KS4THcancelled· A
    KELLEY, WILLIAM RVAgranted 1995-03-29cancelled 2002-01-23
  3. KE4FKI
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held W4MU.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W4MU, oldest first.

  • FORSTER, DONALD E CO
    2007-10-23 → cancelled 2017-09-28
  • KELLEY, WILLIAM R VA
    2019-10-18 active
← Back to W4MU License history →