Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4ZAT callsign genealogy
Currently held by Leddin, Clayton P
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 W4ZAT's current licensee, walking backwards.
- Leddin, Clayton PTNgranted 2023-10-28cancelled 2023-11-18
Successor callsigns
Callsigns held now by people who previously held W4ZAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4ZAT, oldest first.
- THOMPSON, TOMMY W AL2010-07-03 → cancelled 2022-08-23
- Leddin, Clayton P TN2023-11-18 active