Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI3OBX callsign genealogy
Currently held by Plumb, Grant D
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 KI3OBX's current licensee, walking backwards.
- Plumb, Grant DORgranted 2018-02-28cancelled 2018-04-13
Successor callsigns
Callsigns held now by people who previously held KI3OBX.
No current licensee on record previously held this callsign.