Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4GB callsign genealogy
Currently held by SLEEMAN, JAMES T
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 K4GB's current licensee, walking backwards.
- Kingsley, Adam DVAgranted 2023-05-13cancelled 2023-06-09
Successor callsigns
Callsigns held now by people who previously held K4GB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4GB, oldest first.
- SLEEMAN, JAMES T GA2011-03-31 → cancelled 2021-05-21
- Kingsley, Adam D VA2023-06-09 active