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

AJ5J callsign genealogy

Currently held by CATHROW, JEFF

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 AJ5J's current licensee, walking backwards.

  1. AI5IPcancelled· E
    Kolodziej, Scott PTXgranted 2022-08-30cancelled 2022-10-18
  2. KI5WVKcancelled· E
    Kolodziej, Scott PTXgranted 2022-08-30cancelled 2022-09-26

Successor callsigns

Callsigns held now by people who previously held AJ5J.

  1. AK5Bactive· E
    CATHROW, JEFFTXgranted 2020-09-29

All historical holders

Every license row we've seen with the callsign AJ5J, oldest first.

  • COLEMAN, HUGH C OK
    2008-05-22 → cancelled 2018-05-30
  • CATHROW, JEFF TX
    2020-06-23 → cancelled 2020-09-29
  • Kolodziej, Scott P TX
    2022-10-18 active
← Back to AJ5J License history →