uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K4KDX callsign genealogy

Currently held by SMITH, AMAZIAH P

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 K4KDX's current licensee, walking backwards.

  1. AK4RSactive· E
    Shults, Roger DTNgranted 2026-03-07
  2. KE4BFGcancelled· E
    Shults, Roger DTNgranted 2023-02-23cancelled 2026-03-07

Successor callsigns

Callsigns held now by people who previously held K4KDX.

  1. KB4KDXcancelled· E
    HALL III, WAYNE LGAgranted 2016-02-06cancelled 2023-12-01
  2. AJ4Qcancelled· E
    COLLIN, FABRICE LGAgranted 2012-01-10cancelled 2013-04-09

All historical holders

Every license row we've seen with the callsign K4KDX, oldest first.

  • SMITH, AMAZIAH P NC
    1996-11-04 → cancelled 2003-03-21
  • COLLIN, FABRICE L GA
    2010-09-10 → cancelled 2012-01-10
  • HALL III, WAYNE L TN
    2014-02-04 → cancelled 2016-02-06
  • SMITH, ROGER P NC
    2025-12-11 active
← Back to K4KDX License history →