Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9KKO callsign genealogy
Currently held by Birck, James
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 N9KKO's current licensee, walking backwards.
- Birck 224, James SWIgranted 2015-10-14cancelled 2021-07-30
Successor callsigns
Callsigns held now by people who previously held N9KKO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9KKO, oldest first.
- FATH, STEVEN L IN1991-01-08 → cancelled 2003-01-09
- Birck, James WI2021-07-30 active