Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KT7S callsign genealogy
Currently held by LE CLAIR, CLEVE D
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 KT7S's current licensee, walking backwards.
- CHARLES, WILLIAM BMTgranted 2011-03-16cancelled 2011-05-24
Successor callsigns
Callsigns held now by people who previously held KT7S.
- McDermott, J EILgranted 2013-03-08cancelled 2017-12-27
All historical holders
Every license row we've seen with the callsign KT7S, oldest first.
- LE CLAIR, CLEVE D OR2006-12-02 → cancelled 2009-05-04
- CHARLES, WILLIAM B MT2021-03-23 active