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

KO4KO callsign genealogy

Currently held by Henderson, Richard B

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 KO4KO's current licensee, walking backwards.

  1. KO4AGIcancelled· E
    Henderson, Richard BKYgranted 2019-11-22cancelled 2020-01-10

Successor callsigns

Callsigns held now by people who previously held KO4KO.

  1. W4AMXactive· E
    MITCHELL, WILLIAMALgranted 2024-08-30
  2. AC4ZXcancelled· E
    Finger, Robert JFLgranted 2022-12-14cancelled 2025-11-19

All historical holders

Every license row we've seen with the callsign KO4KO, oldest first.

  • MITCHELL, WILLIAM G FL
    2010-12-17 → cancelled 2014-09-27
  • Henderson, Richard B KY
    2020-01-10 active
← Back to KO4KO License history →