Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK9COB callsign genealogy
Currently held by O'Brien, Conor J
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 KK9COB's current licensee, walking backwards.
- OBrien, Conor JNVgranted 2021-09-07cancelled 2021-11-02
Successor callsigns
Callsigns held now by people who previously held KK9COB.
No current licensee on record previously held this callsign.