Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8WMS callsign genealogy
Currently held by Sandborn, William 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 K8WMS's current licensee, walking backwards.
- Sandborn, William MMIgranted 2010-07-01cancelled 2012-11-02
Successor callsigns
Callsigns held now by people who previously held K8WMS.
- Smith, William MSCgranted 2019-12-27
All historical holders
Every license row we've seen with the callsign K8WMS, oldest first.
- Smith, William M SC2007-03-30 → cancelled 2010-03-23
- Sandborn, William M MI2022-08-16 active