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

KU4J callsign genealogy

Currently held by PEARSON, JOHN T

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 KU4J's current licensee, walking backwards.

  1. KS4UNcancelled· E
    CORLEY, FRANK JALgranted 2009-01-27cancelled 2009-03-17
  2. KU4Zactive· E
    BLEDSOE, MICHAEL DNCgranted 2020-12-11
  3. KD4QZAcancelled· E
    BLEDSOE, MICHAEL DGAgranted 2002-05-16cancelled 2011-02-15

Successor callsigns

Callsigns held now by people who previously held KU4J.

  1. K5ACactive· E
    PEARSON, JOHN TTXgranted 2017-01-27

All historical holders

Every license row we've seen with the callsign KU4J, oldest first.

  • PEARSON, JOHN T TX
    1998-08-19 → cancelled 2007-02-23
  • CORLEY, FRANK J AL
    2019-03-12 active
← Back to KU4J License history →