Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO2NYC callsign genealogy
Currently held by Guli, Christopher
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 KO2NYC's current licensee, walking backwards.
- Guli, ChristopherNYgranted 2026-02-18cancelled 2026-08-08
Successor callsigns
Callsigns held now by people who previously held KO2NYC.
- BOYLE, THOMASNYgranted 2010-12-03cancelled 2022-12-06
All historical holders
Every license row we've seen with the callsign KO2NYC, oldest first.
- BOYLE, THOMAS A NY2010-09-28 → cancelled 2010-12-03
- Guli, Christopher NY2026-08-08 active