Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0JJZ callsign genealogy
Currently held by Fredde, Mark A
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 KC0JJZ's current licensee, walking backwards.
- FREDDE, MARK AKSgranted 1995-05-03cancelled 2000-12-22
Successor callsigns
Callsigns held now by people who previously held KC0JJZ.
No current licensee on record previously held this callsign.