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

KJ4Y callsign genealogy

Currently held by Jackson, Mark E

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 KJ4Y's current licensee, walking backwards.

  1. AI4LIcancelled· E
    Jackson, Mark EVAgranted 2002-06-27cancelled 2006-11-14
  2. KG4UAVcancelled· E
    Jackson, Mark EVAgranted 2002-06-27cancelled 2005-07-22

Successor callsigns

Callsigns held now by people who previously held KJ4Y.

  1. K4DIactive· E
    Lineberger, James MGAgranted 2014-07-09
  2. W7AVLcancelled· E
    FEUERSTEIN, MARTIN JWAgranted 2002-06-01cancelled 2002-07-20

All historical holders

Every license row we've seen with the callsign KJ4Y, oldest first.

  • FEUERSTEIN, MARTIN J WA
    1996-01-19 → cancelled 2002-06-01
  • Lineberger, James M GA
    2004-07-13 → cancelled 2004-09-28
  • Jackson, Mark E VA
    2016-11-16 active
← Back to KJ4Y License history →