Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO0LIO callsign genealogy
Currently held by LOSBY, NICHOLAS 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 KO0LIO's current licensee, walking backwards.
- LOSBY, NICHOLAS JIAgranted 2017-01-13cancelled 2017-01-31
Successor callsigns
Callsigns held now by people who previously held KO0LIO.
No current licensee on record previously held this callsign.