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

W4DFR callsign genealogy

Currently held by Rees Sr, David F

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 W4DFR's current licensee, walking backwards.

  1. KK4KOEcancelled· E
    Rees Sr, David FKYgranted 2012-07-19cancelled 2013-09-06

Successor callsigns

Callsigns held now by people who previously held W4DFR.

  1. K4TCHcancelled· E
    HERING, THOMAS CTNgranted 2012-03-27cancelled 2018-07-24
  2. K4TCHcancelled· E
    HERING, THOMAS CFLgranted 2000-07-04cancelled 2001-10-27

All historical holders

Every license row we've seen with the callsign W4DFR, oldest first.

  • HERING, THOMAS C FL
    1998-05-28 → cancelled 2000-07-04
  • HERING, THOMAS C FL
    2001-10-27 → cancelled 2002-06-22
  • Rees Sr, David F KY
    2023-06-22 active
← Back to W4DFR License history →