Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6SG callsign genealogy
Currently held by Cunningham, William S
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 K6SG's current licensee, walking backwards.
- Cunningham, Wm SeanWAgranted 2005-02-11cancelled 2007-06-12
Successor callsigns
Callsigns held now by people who previously held K6SG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6SG, oldest first.
- LEONE, GEORGE R CA2003-12-03 → cancelled 2007-02-24
- Cunningham, William S WA2017-05-12 active