Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7SFW callsign genealogy
Currently held by Potts, 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 K7SFW's current licensee, walking backwards.
- Potts, William MWAgranted 2016-06-20cancelled 2020-10-27
Successor callsigns
Callsigns held now by people who previously held K7SFW.
No current licensee on record previously held this callsign.