Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4YYY callsign genealogy
Currently held by SGAC EMPLOYEES RADIO CLUB
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 K4YYY's current licensee, walking backwards.
- Wood Jr, Hoyt JSCgranted 2010-06-01cancelled 2010-06-25
Successor callsigns
Callsigns held now by people who previously held K4YYY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4YYY, oldest first.
- SGAC EMPLOYEES RADIO CLUB GA1997-03-04 → cancelled 2009-03-05
- Wood Jr, Hoyt J SC2020-05-13 active