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

K4UUU callsign genealogy

Currently held by MEMMER, PAUL D

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 K4UUU's current licensee, walking backwards.

  1. KO4ASCcancelled· T
    MEMMER, PAUL DKYgranted 2019-12-26cancelled 2020-01-24

Successor callsigns

Callsigns held now by people who previously held K4UUU.

  1. KE4Hactive· E
    FIELDER JR, ROBERT ANCgranted 2018-03-29
  2. K4TOYactive· A
    GOLDEN, WILLIAM BFLgranted 2016-10-04
  3. W4DSYactive· G
    Wadsworth, William HNCgranted 2014-08-26

All historical holders

Every license row we've seen with the callsign K4UUU, oldest first.

  • Wadsworth, William H VA
    1998-01-07 → cancelled 2004-10-26
  • FIELDER JR, ROBERT A VA
    2006-12-27 → cancelled 2007-03-13
  • GOLDEN, WILLIAM B FL
    2016-05-20 → cancelled 2016-10-04
  • MEMMER, PAUL D KY
    2020-01-24 active
← Back to K4UUU License history →