Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RGB callsign genealogy
Currently held by Bryant, Robert G
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 K4RGB's current licensee, walking backwards.
- Bryant, Robert GSCgranted 2009-09-26cancelled 2014-12-23
Successor callsigns
Callsigns held now by people who previously held K4RGB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4RGB, oldest first.
- CASTLEBERRY, HOWARD N TN1997-05-05 → cancelled 2009-05-06
- Bryant, Robert G AL2024-11-26 active