Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7MBT callsign genealogy
Currently held by THELIN, MICHAEL B
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 W7MBT's current licensee, walking backwards.
- THELIN, MICHAEL BIDgranted 2015-02-17cancelled 2023-08-25
Successor callsigns
Callsigns held now by people who previously held W7MBT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7MBT, oldest first.
- MOWERY, JAMES A AZ1987-09-22 → cancelled 1999-09-23
- THELIN, MICHAEL B ID2023-08-25 active