Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4OBI callsign genealogy
Currently held by BROWN, TROY 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 K4OBI's current licensee, walking backwards.
- BROWN, TROY ANCgranted 2013-06-19cancelled 2014-09-03
Successor callsigns
Callsigns held now by people who previously held K4OBI.
No current licensee on record previously held this callsign.