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

AI5EF callsign genealogy

Currently held by Marler, Scott H

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 AI5EF's current licensee, walking backwards.

  1. N5ACXcancelled· E
    MARLER, SCOTT HTXgranted 2022-05-17cancelled 2023-09-06
  2. N5ABIactive· E
    HARKINS, DALE ETXgranted 2025-12-09
  3. KJ5ITGcancelled· E
    HARKINS, DALE ETXgranted 2024-11-07cancelled 2025-12-09

Successor callsigns

Callsigns held now by people who previously held AI5EF.

  1. NF5Ractive· E
    Marler, Scott HTXgranted 2025-06-06
  2. N5RGNactive· E
    THOMAS, REAGAN AOKgranted 2021-07-24

All historical holders

Every license row we've seen with the callsign AI5EF, oldest first.

  • THOMAS, REAGAN A OK
    2017-05-11 → cancelled 2021-07-24
  • Marler, Scott H TX
    2023-09-06 → cancelled 2025-06-06
← Back to AI5EF License history →