Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA1ZCM callsign genealogy
Currently held by Breau, William S
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 WA1ZCM's current licensee, walking backwards.
- Breau, William SCTgranted 2021-02-19cancelled 2022-01-15
Successor callsigns
Callsigns held now by people who previously held WA1ZCM.
No current licensee on record previously held this callsign.