Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0MJZ callsign genealogy
Currently held by Zelenak, Michael J
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 K0MJZ's current licensee, walking backwards.
- Zelenak, Michael JIAgranted 2022-03-15cancelled 2022-04-16
Successor callsigns
Callsigns held now by people who previously held K0MJZ.
No current licensee on record previously held this callsign.