uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

AI0UU callsign genealogy

Currently held by SMITH, ROGER 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 AI0UU's current licensee, walking backwards.

  1. WX0DXcancelled· E
    SMITH, ROGER DMOgranted 2021-06-04cancelled 2021-12-21
  2. AI0Hactive· E
    Breitbarth, ChristianMNgranted 2023-06-23
  3. KF0FQVcancelled· E
    Breitbarth, ChristianMNgranted 2021-05-14cancelled 2023-06-23

Successor callsigns

Callsigns held now by people who previously held AI0UU.

  1. KI0Ucancelled· E
    SMITH, ROGER DMOgranted 2019-07-23cancelled 2020-10-06
← Back to AI0UU License history →