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

KT5XS 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 KT5XS's current licensee, walking backwards.

  1. KZ5Qactive· E
    Ziegler, Daniel MTXgranted 2024-02-21
  2. KB5DMZcancelled· E
    Ziegler, Daniel MTXgranted 2019-04-16cancelled 2024-02-21
  3. KI5DZIcancelled· G
    Ziegler, Daniel MTXgranted 2019-03-27cancelled 2019-04-16

Successor callsigns

Callsigns held now by people who previously held KT5XS.

  1. KZ5Qcancelled· E
    KLINGLER, STEPHEN DTXgranted 2016-11-15cancelled 2022-01-14
  2. KZ5Qcancelled· E
    KLINGLER, STEPHEN DAZgranted 2009-09-26cancelled 2011-10-12

All historical holders

Every license row we've seen with the callsign KT5XS, oldest first.

  • KLINGLER, STEPHEN D AZ
    2004-09-28 → cancelled 2009-09-26
  • KLINGLER, STEPHEN D TX
    2011-10-12 → cancelled 2016-11-15
  • KLINGLER, STEPHEN D TX
    2022-01-14 active
← Back to KT5XS License history →