Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6SBD callsign genealogy
Currently held by Williams, C David
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 W6SBD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W6SBD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6SBD, oldest first.
- Williams, C David CA2004-09-24 → cancelled 2012-09-21
- LAKE COUNTY AMATEUR RADIO SOCIETY CA2024-09-17 active