Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5MRZ callsign genealogy
Currently held by Chubon, James
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 K5MRZ's current licensee, walking backwards.
- Chubon, JamesAZgranted 2022-03-15cancelled 2022-04-02
Successor callsigns
Callsigns held now by people who previously held K5MRZ.
No current licensee on record previously held this callsign.