Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7MST callsign genealogy
Currently held by St Claire, Michael
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 W7MST's current licensee, walking backwards.
- St Claire, MichaelIDgranted 2020-06-05cancelled 2021-06-25
Successor callsigns
Callsigns held now by people who previously held W7MST.
No current licensee on record previously held this callsign.