Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7MKZ callsign genealogy
Currently held by THUNDERBIRD AMATEUR RADIO CLUB
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 KC7MKZ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KC7MKZ.
- W7TBCactiveTHUNDERBIRD AMATEUR RADIO CLUBAZgranted 2022-08-05