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

AD6LJ callsign genealogy

Currently held by Cook, Jack

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 AD6LJ's current licensee, walking backwards.

  1. KR6EBcancelled· A
    Cook, JackCAgranted 1999-12-07cancelled 2000-04-25
  2. KF6ZQJcancelled· P
    Cook, JackCAgranted 1999-12-07cancelled 2000-03-09

Successor callsigns

Callsigns held now by people who previously held AD6LJ.

  1. WN6Cactive· E
    Cook, JackCAgranted 2020-07-08