Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4GBO callsign genealogy
Currently held by VAUGHAN, CHARLES A
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 K4GBO's current licensee, walking backwards.
- Sowers, Joel ETNgranted 2016-01-14cancelled 2016-02-02
Successor callsigns
Callsigns held now by people who previously held K4GBO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4GBO, oldest first.
- VAUGHAN, CHARLES A AL1993-10-26 → cancelled 2005-10-27
- Sowers, Joel E TN2016-02-02 active