Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7CTS callsign genealogy
Currently held by Nadwornick, William E
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 K7CTS's current licensee, walking backwards.
- HERETH, KATHERINE LUTgranted 2017-09-20cancelled 2018-03-13
Successor callsigns
Callsigns held now by people who previously held K7CTS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7CTS, oldest first.
- Nadwornick, William E WA2007-08-13 → cancelled 2017-06-08
- HERETH, KATHERINE L UT2018-03-13 active