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

K0NGX callsign genealogy

Currently held by KASS, MASON A

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 K0NGX's current licensee, walking backwards.

  1. KE9BEJcancelled· T
    SAGAN, JOE EILgranted 2024-08-10cancelled 2024-09-07

Successor callsigns

Callsigns held now by people who previously held K0NGX.

  1. N7JCEactive· G
    Edmonds, James CNVgranted 2020-06-19
  2. NJ5Hactive· E
    KASS, MASON ACOgranted 2016-07-23

All historical holders

Every license row we've seen with the callsign K0NGX, oldest first.

  • KASS, MASON A CO
    2013-05-25 → cancelled 2016-07-23
  • Edmonds, James C AZ
    2018-08-11 → cancelled 2020-06-19
  • SAGAN, JOE E IL
    2024-09-07 active
← Back to K0NGX License history →