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

K4WJJ callsign genealogy

Currently held by JOHNSON, WILLIAM 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 K4WJJ's current licensee, walking backwards.

  1. W4MOOactive· G
    ANDERSON, JOE RTNgranted 2020-11-24
  2. KC4VPEcancelled· G
    ANDERSON, JOE RTNgranted 2020-11-03cancelled 2020-11-24
  3. KC4OQX
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held K4WJJ.

  1. AA4WJcancelled· E
    JOHNSON, WILLIAM JFLgranted 2009-06-02cancelled 2012-04-20
← Back to K4WJJ License history →