Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB9MAZ callsign genealogy
Currently held by CARRENO, MARIANO
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 KB9MAZ's current licensee, walking backwards.
- MAYS, CHRISTOPHER SINgranted 2003-04-03cancelled 2007-12-18
Successor callsigns
Callsigns held now by people who previously held KB9MAZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB9MAZ, oldest first.
- CARRENO, MARIANO IL1995-11-21 → cancelled 2007-11-22
- MAYS, CHRISTOPHER S IN2017-12-12 active