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

K4OW callsign genealogy

Currently held by Overholser Jr, Jack 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 K4OW's current licensee, walking backwards.

  1. WA4JOcancelled· E
    Overholser Jr, Jack BFLgranted 2019-04-30cancelled 2019-09-27

Successor callsigns

Callsigns held now by people who previously held K4OW.

  1. WA4JOcancelled· E
    Overholser Jr, Jack BFLgranted 2019-04-30cancelled 2019-09-27
  2. W4PWcancelled· E
    WILSON, MILTON PVAgranted 2000-07-29cancelled 2009-11-03
  3. W4PWcancelled· E
    WILSON, MILTON PVAgranted 1998-09-10cancelled 1999-12-18

All historical holders

Every license row we've seen with the callsign K4OW, oldest first.

  • WILSON, MILTON P VA
    1999-12-18 → cancelled 2000-07-29
  • Overholser Jr, Jack B FL
    2012-06-28 → cancelled 2019-04-30
  • Overholser Jr, Jack B FL
    2019-09-27 active
  • —
    — → cancelled 1998-09-10
← Back to K4OW License history →