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

KX4S callsign genealogy

Currently held by QRU Radio Club

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 KX4S's current licensee, walking backwards.

  1. KY4DEcancelled· E
    Johnston, David TALgranted 2020-10-02cancelled 2021-04-24
  2. KO4IANcancelled· E
    Johnston, David TALgranted 2020-10-02cancelled 2020-12-10

Successor callsigns

Callsigns held now by people who previously held KX4S.

  1. W4XXactive
    Dos Equis Radio ClubVAgranted 2019-04-05

All historical holders

Every license row we've seen with the callsign KX4S, oldest first.

  • BUNTING, WILLIAM V FL
    2005-07-20 → cancelled 2017-09-14
  • QRU Radio Club WV
    2017-11-04 → cancelled 2019-04-05
  • Johnston, David T AL
    2021-04-24 active
← Back to KX4S License history →