Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3MTT callsign genealogy
Currently held by THOMPSON, JOHN G
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 W3MTT's current licensee, walking backwards.
- THOMPSON, JOHN GPAgranted 2016-02-12cancelled 2019-04-23
Successor callsigns
Callsigns held now by people who previously held W3MTT.
No current licensee on record previously held this callsign.