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

KW4JA callsign genealogy

Currently held by MEDLEY, K David

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 KW4JA's current licensee, walking backwards.

  1. KW4AEcancelled· E
    Medley, Kim DFLgranted 2014-03-04cancelled 2015-04-29
  2. KV4VWcancelled· E
    MEDLEY, K DavidFLgranted 2014-03-04cancelled 2014-08-07
  3. AB7JKactive· E
    Knudsen, John WWAgranted 2017-12-19
  4. KI7PXEcancelled· E
    Knudsen, John WWAgranted 2017-09-19cancelled 2017-12-19

Successor callsigns

Callsigns held now by people who previously held KW4JA.

  1. KW4TJexpired· E
    MEDLEY, K DavidFLgranted 2014-03-04cancelled 2026-05-27
← Back to KW4JA License history →