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

K4QT callsign genealogy

Currently held by MC CORD III, JOHN D

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 K4QT's current licensee, walking backwards.

  1. K2QFactive· E
    Gritzmacher, Donald ECOgranted 2025-12-09
  2. AC0HTcancelled· E
    Gritzmacher, Donald ECOgranted 2017-01-28cancelled 2025-12-09
  3. KC0ZNUcancelled· E
    Gritzmacher, Donald ECOgranted 2007-02-16cancelled 2007-04-18

Successor callsigns

Callsigns held now by people who previously held K4QT.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4QT, oldest first.

  • MC CORD III, JOHN D GA
    1990-08-28 → cancelled 2002-08-29
  • Aukamp, David W FL
    2022-06-24 active
← Back to K4QT License history →