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

NA5U callsign genealogy

Currently held by THOMAS, MICHAEL L

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 NA5U's current licensee, walking backwards.

  1. W5MLTexpired
    Dillo-DX ClubTXgranted 2005-08-02cancelled 2017-08-03
  2. KY5Uactive· E
    Young Jr, Charles LFLgranted 2017-10-17
  3. AG4YOcancelled· E
    Young Jr, Charles LMSgranted 2003-02-24cancelled 2008-01-01

Successor callsigns

Callsigns held now by people who previously held NA5U.

  1. W5MLTcancelled· E
    THOMAS, MICHAEL LTXgranted 2003-02-19cancelled 2003-07-11

All historical holders

Every license row we've seen with the callsign NA5U, oldest first.

  • THOMAS, MICHAEL L TX
    1994-07-22 → cancelled 2003-02-19
  • THOMAS, MICHAEL L TX
    2023-04-13 active
← Back to NA5U License history →