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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

W4MJK callsign genealogy

Currently held by Kennedy, Michael J

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 W4MJK's current licensee, walking backwards.

  1. KN4KJMcancelled· T
    Kennedy, Michael JFLgranted 2018-03-06cancelled 2018-03-24

Successor callsigns

Callsigns held now by people who previously held W4MJK.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W4MJK, oldest first.

  • MOORE, CARL E TN
    2005-03-10 → cancelled 2017-06-02
  • Kennedy, Michael J FL
    2018-03-24 active