Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA5ZOO callsign genealogy
Currently held by WILLIAMS III, THOMAS M
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 KA5ZOO's current licensee, walking backwards.
- Carrick, Jan RTXgranted 2015-03-02cancelled 2015-03-27
Successor callsigns
Callsigns held now by people who previously held KA5ZOO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA5ZOO, oldest first.
- WILLIAMS III, THOMAS M MS1996-07-24 → cancelled 2008-07-25
- CARRICK, JAN R TX2025-02-12 active