Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4DWI callsign genealogy
Currently held by Richardson, Thomas L
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 KA4DWI's current licensee, walking backwards.
- Richardson, Thomas LTXgranted 2020-05-27cancelled 2020-06-16
Successor callsigns
Callsigns held now by people who previously held KA4DWI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA4DWI, oldest first.
- RICHARDSON, THOMAS L MS1990-11-13 → cancelled 2002-11-14
- Richardson, Thomas L TX2020-06-16 active