Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI4OBO callsign genealogy
Currently held by Ruiz Jr, Homero
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 KI4OBO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KI4OBO.
- RUIZ JR, HOMEROVAgranted 2009-08-28cancelled 2019-02-20