Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4OUI callsign genealogy
Currently held by GUY SR, DAVID L
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 KB4OUI's current licensee, walking backwards.
- Bain, Kimberly WFLgranted 2018-11-16cancelled 2018-12-04
Successor callsigns
Callsigns held now by people who previously held KB4OUI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4OUI, oldest first.
- GUY SR, DAVID L TN1991-12-03 → cancelled 2003-12-04
- Bain, Kimberly W FL2018-12-04 active