Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7TWL callsign genealogy
Currently held by BIRLEW, EARL
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 K7TWL's current licensee, walking backwards.
- Lankford, Thomas WUTgranted 2022-03-22cancelled 2022-04-30
Successor callsigns
Callsigns held now by people who previously held K7TWL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7TWL, oldest first.
- BIRLEW, EARL OR2008-05-28 → cancelled 2020-06-17
- Lankford, Thomas W TX2022-04-30 active