Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6SBL callsign genealogy
Currently held by Thompson, Joan
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 W6SBL's current licensee, walking backwards.
- Thompson, JoanCAgranted 2014-01-30cancelled 2014-04-01
Successor callsigns
Callsigns held now by people who previously held W6SBL.
No current licensee on record previously held this callsign.