Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7WBS callsign genealogy
Currently held by Stringham, Warren B
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 K7WBS's current licensee, walking backwards.
- Ryan, Thaddeus JWAgranted 2024-12-11cancelled 2025-07-01
Successor callsigns
Callsigns held now by people who previously held K7WBS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7WBS, oldest first.
- Stringham, Warren B UT2012-02-11 → cancelled 2024-05-08
- Ryan, Thaddeus J WA2025-07-01 active