Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO4B callsign genealogy
Currently held by CURTIS, DAVID H
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 KO4B's current licensee, walking backwards.
- Davis, Benjamin HNCgranted 2018-12-18cancelled 2026-06-27
Successor callsigns
Callsigns held now by people who previously held KO4B.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO4B, oldest first.
- CURTIS, DAVID H VA2014-04-12 → cancelled 2026-06-09
- Davis, Benjamin H NC2026-06-27 active