Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7WIN callsign genealogy
Currently held by Winter Jr, John M
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 K7WIN's current licensee, walking backwards.
- Winter Jr, John MAZgranted 2014-02-25cancelled 2014-03-18
Successor callsigns
Callsigns held now by people who previously held K7WIN.
- THOMAS, JEFFREY RAZgranted 2020-04-28
All historical holders
Every license row we've seen with the callsign K7WIN, oldest first.
- THOMAS, JEFFREY R AZ2007-03-17 → cancelled 2010-07-20
- Winter Jr, John M AZ2025-03-28 active