Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB9OAK callsign genealogy
Currently held by BHUTANI, RAJ KUMAR
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 KB9OAK's current licensee, walking backwards.
- Okray, Robert AWIgranted 2019-09-30cancelled 2020-04-14
Successor callsigns
Callsigns held now by people who previously held KB9OAK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9OAK, oldest first.
- BHUTANI, RAJ KUMAR MI1996-12-19 → cancelled 2008-07-10
- Okray, Robert A WI2020-04-14 active