Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0SZ callsign genealogy
Currently held by Andren, Brian W
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 AC0SZ's current licensee, walking backwards.
- Andren, Brian WMNgranted 2010-04-30cancelled 2010-08-17
Successor callsigns
Callsigns held now by people who previously held AC0SZ.
No current licensee on record previously held this callsign.