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

K9ZJ callsign genealogy

Currently held by Mc Nabb, Thomas 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 K9ZJ's current licensee, walking backwards.

  1. KD9BKcancelled· E
    Hageman Jr, Richard WWIgranted 2001-01-31cancelled 2007-06-29
  2. N9DTK
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held K9ZJ.

  1. W7ZJactive· E
    Mc Nabb, Thomas RTXgranted 2024-11-16

All historical holders

Every license row we've seen with the callsign K9ZJ, oldest first.

  • Mc Nabb, Thomas R IL
    2003-03-04 → cancelled 2005-02-08
  • Hageman Jr, Richard W WI
    2017-04-06 active
← Back to K9ZJ License history →