Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3MBT callsign genealogy
Currently held by Thompson, Matthew 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 W3MBT's current licensee, walking backwards.
- Thompson, Matthew BPAgranted 2019-11-08cancelled 2019-12-03
Successor callsigns
Callsigns held now by people who previously held W3MBT.
No current licensee on record previously held this callsign.