Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7MSB callsign genealogy
Currently held by Sawyer, Michael D
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 K7MSB's current licensee, walking backwards.
- Sawyer, Michael DUTgranted 2011-04-08cancelled 2011-07-19
Successor callsigns
Callsigns held now by people who previously held K7MSB.
No current licensee on record previously held this callsign.