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

AJ4JK callsign genealogy

Currently held by HILLMANN, JEFFREY S

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 AJ4JK's current licensee, walking backwards.

  1. AI6Kcancelled· E
    Berkompas, David STXgranted 2020-04-28cancelled 2026-09-01
  2. N8RRVcancelled· E
    Berkompas, David SCAgranted 2001-11-02cancelled 2010-07-16

Successor callsigns

Callsigns held now by people who previously held AJ4JK.

  1. AK4JHcancelled· E
    HILLMANN, JEFFREY SFLgranted 2008-07-22cancelled 2008-12-16
← Back to AJ4JK License history →