Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA5ATZ callsign genealogy
Currently held by Kaatz Jr, Michael J
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 KA5ATZ's current licensee, walking backwards.
- Kaatz Jr, Michael JTXgranted 2016-09-27cancelled 2016-10-21
Successor callsigns
Callsigns held now by people who previously held KA5ATZ.
No current licensee on record previously held this callsign.