Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9OIB callsign genealogy
Currently held by ROBLES, ROBERTO
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 KC9OIB's current licensee, walking backwards.
- ROBLES, ROBERTOILgranted 2008-09-19cancelled 2008-09-19
Successor callsigns
Callsigns held now by people who previously held KC9OIB.
No current licensee on record previously held this callsign.