Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7CZK callsign genealogy
Currently held by Czak, John M
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 K7CZK's current licensee, walking backwards.
- Czak, John MNVgranted 2015-05-04cancelled 2015-05-23
Successor callsigns
Callsigns held now by people who previously held K7CZK.
No current licensee on record previously held this callsign.