Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF4SE callsign genealogy
Currently held by Mason II, William M
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 AF4SE's current licensee, walking backwards.
- Mason II, William M D MSCgranted 1999-09-10cancelled 2000-05-03
Successor callsigns
Callsigns held now by people who previously held AF4SE.
No current licensee on record previously held this callsign.