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

KZ5Q callsign genealogy

Currently held by KLINGLER, STEPHEN 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 KZ5Q's current licensee, walking backwards.

  1. KB5DMZcancelled· E
    Ziegler, Daniel MTXgranted 2019-04-16cancelled 2024-02-21
  2. KI5DZIcancelled· G
    Ziegler, Daniel MTXgranted 2019-03-27cancelled 2019-04-16

Successor callsigns

Callsigns held now by people who previously held KZ5Q.

  1. KT5XSactive· E
    KLINGLER, STEPHEN DTXgranted 2022-01-14
  2. AG7KZcancelled· E
    KOONTZ, BRIAN AMTgranted 2015-09-29cancelled 2017-07-18
  3. KT5XScancelled· E
    KLINGLER, STEPHEN DTXgranted 2011-10-12cancelled 2016-11-15

All historical holders

Every license row we've seen with the callsign KZ5Q, oldest first.

  • BRADFORD, DOUGLAS C LA
    1997-07-31 → cancelled 2009-08-01
  • KLINGLER, STEPHEN D AZ
    2009-09-26 → cancelled 2011-10-12
  • KOONTZ, BRIAN A MT
    2013-12-03 → cancelled 2015-09-29
  • KLINGLER, STEPHEN D TX
    2016-11-15 → cancelled 2022-01-14
  • Ziegler, Daniel M TX
    2024-02-21 active
← Back to KZ5Q License history →