Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0AZZ callsign genealogy
Currently held by SCHNOOR SR, EARL N
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 W0AZZ's current licensee, walking backwards.
- DIAZ, ARNOLDMOgranted 2015-04-01cancelled 2019-04-02
Successor callsigns
Callsigns held now by people who previously held W0AZZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0AZZ, oldest first.
- SCHNOOR SR, EARL N IA1987-09-08 → cancelled 1999-09-10
- DIAZ, ARNOLD MO2019-04-02 active