uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K4JZ callsign genealogy

Currently held by Aten III, William G

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 K4JZ's current licensee, walking backwards.

  1. AD4ATcancelled· E
    Aten III, William GFLgranted 2017-04-07cancelled 2017-09-26
  2. N4EGHcancelled· E
    Aten III, William GFLgranted 2011-05-17cancelled 2017-04-07

Successor callsigns

Callsigns held now by people who previously held K4JZ.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4JZ, oldest first.

  • CURRY, WENDELL Y KY
    2007-04-25 → cancelled 2015-09-07
  • Aten III, William G FL
    2017-09-26 active
← Back to K4JZ License history →