Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1MSA callsign genealogy
Currently held by MASATERN
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 W1MSA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1MSA.
- Binette, Sean PMEgranted 2022-12-06cancelled 2025-12-16
All historical holders
Every license row we've seen with the callsign W1MSA, oldest first.
- MASATERN MA2003-04-18 → cancelled 2015-04-21
- Binette, Sean P ME2017-06-10 → cancelled 2022-12-06