Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1NCO callsign genealogy
Currently held by SEFCIK, JOSEPH G
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 K1NCO's current licensee, walking backwards.
- SEFCIK, JOSEPH Gcancelled 1999-02-26
Successor callsigns
Callsigns held now by people who previously held K1NCO.
No current licensee on record previously held this callsign.