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

KD4RJ callsign genealogy

Currently held by MIDDLETON, GEORGE T

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 KD4RJ's current licensee, walking backwards.

  1. KO4HYUcancelled· E
    RODRIGUEZ, JUAN AFLgranted 2020-09-29cancelled 2020-10-20

Successor callsigns

Callsigns held now by people who previously held KD4RJ.

  1. WU4Factive· E
    James, Robert SSCgranted 2026-01-03
  2. W9GTMcancelled· E
    MIDDLETON, GEORGE TILgranted 2005-07-09cancelled 2013-07-26

All historical holders

Every license row we've seen with the callsign KD4RJ, oldest first.

  • MIDDLETON, GEORGE T IL
    2000-01-21 → cancelled 2005-07-09
  • James, Robert S SC
    2015-08-25 → cancelled 2016-04-01
  • RODRIGUEZ, JUAN A FL
    2020-10-20 active
← Back to KD4RJ License history →