Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9KRK callsign genealogy
Currently held by CARSTENS, CHRISTOPHER S
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 N9KRK's current licensee, walking backwards.
- Fesco, MarkINgranted 2026-03-11cancelled 2026-04-11
Successor callsigns
Callsigns held now by people who previously held N9KRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9KRK, oldest first.
- CARSTENS, CHRISTOPHER S IL1992-01-21 → cancelled 2004-01-22
- Johnson, Kirk A IL2007-02-09 → cancelled 2019-02-12
- Fesco, Mark IN2026-04-11 active