Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA7DTX callsign genealogy
Currently held by Stewart, Lawrence W
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 KA7DTX's current licensee, walking backwards.
- Stewart, Lawrence WILgranted 2017-06-28cancelled 2017-08-29
Successor callsigns
Callsigns held now by people who previously held KA7DTX.
- Stewart, Lawrence WILgranted 2024-06-11
All historical holders
Every license row we've seen with the callsign KA7DTX, oldest first.
- STEWART, LAWRENCE W OR1996-05-23 → cancelled 2008-05-24
- Stewart, Lawrence W IL2017-08-29 → cancelled 2024-06-11