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

KJ4KY callsign genealogy

Currently held by King Jr, Billy R

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 KJ4KY's current licensee, walking backwards.

  1. W4BGYactive· E
    King Jr, Billy RKYgranted 2026-04-22

Successor callsigns

Callsigns held now by people who previously held KJ4KY.

  1. W4BGYactive· E
    King Jr, Billy RKYgranted 2026-04-22
  2. N4AAVcancelled· E
    King Jr, Billy RKYgranted 2014-01-04cancelled 2014-10-21
  3. NQ4Acancelled· E
    FALLS, KEVIN AVAgranted 2007-02-08cancelled 2007-11-14

All historical holders

Every license row we've seen with the callsign KJ4KY, oldest first.

  • King Jr, Billy R KY
    2010-06-02 → cancelled 2014-01-04
  • King Jr, Billy R KY
    2015-11-17 → cancelled 2016-03-05
← Back to KJ4KY License history →