Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7MST callsign genealogy
Currently held by Toot, Michael S
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 K7MST's current licensee, walking backwards.
- Toot, Michael SWAgranted 2008-09-24cancelled 2009-03-24
Successor callsigns
Callsigns held now by people who previously held K7MST.
No current licensee on record previously held this callsign.