uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K0JKU callsign genealogy

Currently held by BUEKER, JACOB R

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 K0JKU's current licensee, walking backwards.

  1. W0JKUcancelled· G
    BUEKER, JACOB RKSgranted 2020-04-28cancelled 2020-09-09
  2. KE0WJQactive· E
    BUEKER, JACOB RKSgranted 2021-07-27

Successor callsigns

Callsigns held now by people who previously held K0JKU.

  1. KE0WJQactive· E
    BUEKER, JACOB RKSgranted 2021-07-27
  2. KA6ETEactive· E
    Dixon, James ECOgranted 2018-08-17

All historical holders

Every license row we've seen with the callsign K0JKU, oldest first.

  • Dixon, James E CO
    2016-11-01 → cancelled 2018-08-17
  • BUEKER, JACOB R KS
    2020-09-09 → cancelled 2021-07-27
← Back to K0JKU License history →