Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0JK callsign genealogy
Currently held by KREITZER, JOSEPH L
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 KC0JK's current licensee, walking backwards.
- KREITZER, JOSEPH LMNgranted 1998-12-08cancelled 1999-11-27
Successor callsigns
Callsigns held now by people who previously held KC0JK.
No current licensee on record previously held this callsign.