Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC1SA callsign genealogy
Currently held by MASON, GUY A
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 AC1SA's current licensee, walking backwards.
- MASON, GUY AMEgranted 2022-11-08cancelled 2024-05-31
Successor callsigns
Callsigns held now by people who previously held AC1SA.
- MASON, GUY AMEgranted 2022-11-08cancelled 2024-06-22