Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7JSW callsign genealogy
Currently held by Wederski, Jan S
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 K7JSW's current licensee, walking backwards.
- Wederski, Jan SAZgranted 2022-02-25cancelled 2022-03-18
Successor callsigns
Callsigns held now by people who previously held K7JSW.
- WEIR III, JOHN SOKgranted 2015-06-13
All historical holders
Every license row we've seen with the callsign K7JSW, oldest first.
- WEIR III, JOHN S ID2005-08-09 → cancelled 2015-06-13
- Wederski, Jan S AZ2022-03-18 active