Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N5KOI callsign genealogy
Currently held by Nickolaou, Chris
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 N5KOI's current licensee, walking backwards.
- Nickolaou, ChrisTXgranted 2021-02-16cancelled 2021-03-12
Successor callsigns
Callsigns held now by people who previously held N5KOI.
No current licensee on record previously held this callsign.