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

K4QO callsign genealogy

Currently held by SANDERS, DOUGLAS

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 K4QO's current licensee, walking backwards.

  1. KB4KDXcancelled· E
    HALL III, WAYNE LGAgranted 2016-02-06cancelled 2023-12-01
  2. K4KDXactive· E
    SMITH, ROGER PNCgranted 2025-12-11
  3. AK4RSactive· E
    Shults, Roger DTNgranted 2026-03-07
  4. KE4BFGcancelled· E
    Shults, Roger DTNgranted 2023-02-23cancelled 2026-03-07

Successor callsigns

Callsigns held now by people who previously held K4QO.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4QO, oldest first.

  • SANDERS, DOUGLAS SC
    1995-06-19 → cancelled 2002-07-02
  • HARGENRADER, JAMES R SC
    2004-07-30 → cancelled 2009-10-21
  • MATTHEWS, MARK F NC
    2011-11-11 → cancelled 2023-11-14
  • HALL III, WAYNE L GA
    2023-12-01 active
← Back to K4QO License history →