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

KB5UIO callsign genealogy

Currently held by HARRISON, STEVEN P

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 KB5UIO's current licensee, walking backwards.

  1. KD5ZAQcancelled· T
    HARRISON, STEVEN PMSgranted 2013-10-30cancelled 2016-02-09

Successor callsigns

Callsigns held now by people who previously held KB5UIO.

  1. W5SPHcancelled· E
    HARRISON, STEVEN PMSgranted 2022-03-08cancelled 2026-04-07
  2. KD5ZAQcancelled· T
    HARRISON, STEVEN PMSgranted 2013-10-30cancelled 2016-02-09

All historical holders

Every license row we've seen with the callsign KB5UIO, oldest first.

  • HARRISON, STEVEN P MS
    1992-07-28 → cancelled 2003-08-30
  • HARRISON, STEVEN P MS
    2016-02-09 → cancelled 2022-03-08
← Back to KB5UIO License history →